Publications

2023

• 1. Graphene Oxides as Epsilon-Near-Zero Platforms Operating in Terahertz Frequency Range  

Laser & Photonics Reviews, 2300726 (2023); DOI: 10.1002/lpor.202300726

S. W. Jun, J. H. Yim, J.-Y. Park, S. Lee, Y. H. Ahn* 

• 2. Mechanical Control of Polaritonic States in Lead Halide Perovskite Phonons Strongly Coupled in THz Microcavity

Journal Physical Chemistry Letters 14, 10318 (2023); DOI: 10.1021/acs.jpclett.3c02717

H. S. Kim, A. A. Khan, J.-Y. Park, S. Lee, Y. H. Ahn*

• 3. Single bacteria identification with second-harmonic generation in MoS2  

Biosensors and Bioelectronics 241, 115675 (2023); DOI: 10.1016/j.bios.2023.115675

Y. C. Kim, S. W. Jun, Y. H. Ahn*

• 4. Gate-Tunable Graphene/ZnO-Based DualChannel Field-Effect Transistor Gas Sensor for Simultaneous Detection of CO2 and NO2 Gases

IEEE Sensors Journal 23, 24214 (2023); DOI: 10.1109/JSEN.2023.3309413

Y. Kim, G. Jun, Y. Kim, J. Park, Y. Ahn, K Lee*

• 5. Developing a Novel Terahertz Fabry–Perot Microcavity Biosensor by Incorporating Porous Film for Yeast Sensing

Sensors 23, 5797 (2023); DOI: 10.3390/s23135797

H. S. Kim, S. W. Jun, Y. H. Ahn*

• 6. In-plane mixed-dimensional 2D/2D/1D MoS2 /MoTe2 /Mo6Te6 heterostructures for low contact resistance optoelectronics

Chemical Engineering Journal 468, 143678 (2023); DOI: 10.1016/j.cej.2023.143678

H. Kim, Y. C. Kim, Y. H. Ahn*, Y. Yoo*

• 7. High-Speed THz Time-of-Flight Imaging with Reflective Optics

Sensors 23, 873 (2023); DOI: 10.3390/s23020873

H. Yoo, J. Kim, Y. H. Ahn*

• 8. Terahertz virus-sized gold nanogap sensor

Nanophotonics 12, 147 (2023); DOI: 10.1515/nanoph-2022-0706

G. Ji, H. S. Kim, S. H. Cha, H.-T. Lee, H. J. Kim, S. W. Lee, K. J. Ahn, K.-H. Kim*, Y. H. Ahn*, H.-R. Park*

2022

1. Terahertz Nondestructive Time-of-flight Imaging with a Large Depth Range

Current Optics and Photonics 6, 619 (2022); DOI: 10.3807/COPP.2022.6.6.619

H. S. Kim, J. Kim, Y. H. Ahn*

2. Mechanical failures of Two-Dimensional materials on polymer substrates

Applied Surface Science 605, 154736 (2022); DOI: 10.1016/j.apsusc.2022.154736

K. Chae, V. T. Nguyen, S. Lee, T. Q. Phung, Y. Sim, M.-J. Seong, S. W. Lee, Y. H. Ahn, S. Lee, S. Ryu, J.-Y. Park*

3. Mechanical failures of Two-Dimensional materials on polymer substratesVertically Stacked vdW Double Heterojunction Photodiode with Ultrawide Bandgap Gallium Oxide Electron Reservoir

Advanced Optical Materials 10, 2200611 (2022); DOI: 10.1002/adom.202200611

C. H. Lee, Y. Park, S. Kim, Y. J. Jeong, Y. H. Ahn, Y. C. Kim, J. Heo*, G. Yoo*

4. Effects of Oxygen Vacancies in a Zinc Oxide Electron Transport Layer on Long-Term Degradation and Short-Term Photo-Induced Changes in the Operation Characteristics of Organic Solar Cells 

ACS Applied Energy Materials 5, 9668 (2022); DOI: 10.1021/acsaem.2c01325

S. Y. Ryu, N. Y. Ha, Y. H. Ahn, J.-Y. Park, S. Lee*

5. Detection of Polystyrene-Microplastic Particles in Water Using Surface-Functionalized Terahertz Microfluidic Metamaterials  

Applied Sciences 12, 7102 (2022); DOI: 10.3390/app12147102

S. J. Park, Y. H. Ahn*

6. Recent defect passivation drifts and role of additive engineering in perovskite photovoltaics  

Nano Energy 101, 107579 (2022); DOI: 10.1016/j.nanoen.2022.107579

A. Hassan*, Z. Wang, Y. H. Ahn, M. Azam, A. A. Khan, U. Farooq, M. Zubair, Y. Cao*

7. Orientation-mediated luminescence enhancement and spin-orbit coupling in ZnO single crystals    

Nanomaterials 12, 2192 (2022); DOI: 10.3390/nano12132192

A. Hassan*, A. A. Khan*, Y. H. Ahn, M. Azam, M. Zubair, W. Xue, Y. Cao*

8. Strong Interfacial Charge Trapping in Ultrathin SrRuO3 on SrTiO3 Probed by Noise Spectroscopy  

J. Phys. Chem. Lett. 13, 5618 (2022); DOI: 10.1021/acs.jpclett.2c01163

J.-W. Lee, J. Kim, K. Eom, J. Jeon, Y. C. Kim, H. S. Kim, Y. H.  Ahn, S. Kim, C.-B. Eom, H. Lee* 

9. Terahertz thermal curve analysis for label-free identification of pathogens

Nature Communications 13, 3470 (2022); DOI: 10.1038/s41467-022-31137-2

S. W. Jun, Y. H. Ahn*

10. Imaging Spatial Distribution of Photogenerated Carriers in Monolayer MoS2 with Kelvin Probe Force Microscopy

ACS Applied Materials & Interfaces 14, 26295 (2022); DOI:  10.1021/acsami.2c06315

W. Yim, V. T. Nguyen, Q. T. Phung, H. S. Kim, Y. H. Ahn, S. Lee, J.-Y. Park*

11. Low Dark Current and Performance Enhanced Perovskite Photodetector by Graphene Oxide as an Interfacial Layer

Nanomaterials 12, 190 (2022); DOI: 10.3390/ nano12020190

A. Hassan, M. Azam, Y. H. Ahn , M. Zubair, Y. Cao, A. A. Khan*

2021

1. Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy

Applied Sciences 11, 10594 (2021); DOI: 10.3390/app112210594

H. S. Kim, S. Y. Baik, J. W. Lee, J. Kim, Y. H. Ahn*

2. Ultra‑low profile solar‑cell‑integrated antenna with a high form factor

Scientific Reports 11, 20918 (2021); DOI: 10.1038/s41598-021-00461-w

A. Ali, H. Wang, J. Lee, Y. H. Ahn, I. Park*

3. Light intensity dependence of organic solar cell operation and dominance switching between Shockley–Read–Hall and bimolecular recombination losses

Scientific Reports 11, 16781 (2021); DOI: 10.1038/s41598-021-96222-w

S. Ryu, N. Y. Ha, Y. H. Ahn, J.-Y. Park, S. Lee*

4. High-Speed Imaging of Second-Harmonic Generation in MoS2 Bilayer under Femtosecond Laser Ablation

Nanomaterials 11, 1786 (2021); DOI: 10.3390/nano11071786

Y. C. Kim, H. Yoo, V. T. Nguyen, S. Lee, J.-Y. Park, Y. H. Ahn*

5. Rapid 3D-Imaging of Semiconductor Chips Using THz Time-of-Flight Technique

Applied Science 11, 4770 (2021); DOI: 10.3390/app11114770

J. H. Yim, S.-y. Kim, Y. Kim, S. Cho, J. Kim, Y. H. Ahn*

6. Metal-Organic Hybrid Metamaterials for Spectral-Band Selective Active Terahertz Modulators

Applied Science 11, 2765 (2021); DOI: 10.3390/app11062765

H. K. Yoo, S. B. Cho, S. J. Park, Y. H. Ahn, C. Kang, I.-W. Hwang, J. W. Lee*

7. Gate-tunable photodetector and ambipolar transistor implemented using a graphene/MoSe2 barristor

NPG Asia Materials 13, 10 (2021); DOI: 10.1038/s41427-021-00281-4

G. Oh, J. H. Jeon, Y. C. Kim, Y. H. Ahn, B. H. Park*

2020

• 1. Direct laser writing lithography using a negative-tone electron-beam resist

Optical Materials Express 10, 2813 (2020); DOI: 10.1364/OME.409302 (Editor's pick)

H. S. Kim, B. H. Son, Y. C. Kim, Y. H. Ahn*

• 2. Phonon-Polaritons in Lead Halide Perovskite Film Hybridized with THz Metamaterials

Nano Letters 20, 6690   (2020); DOI: 10.1021/acs.nanolett.0c02572

H. S. Kim, N. Y. Ha, J.-Y. Park, S. Lee, D.-S. Kim, Y. H. Ahn*

• 3. Large-area growth of high-quality graphene/MoS2 vertical heterostructures by chemical vapor deposition with nucleation control

Carbon 168, 580  (2020); DOI: 10.1016/j.carbon.2020.07.014

V. T. Nguyen, Y. C. Kim, Y. H. Ahn, S. Lee, J.-Y. Park*

• 4. Ultrashort field emission in metallic nanostructures and low-dimensional carbon materials

Advances in Physics: X 5, 1726207  (2020); DOI: 10.1080/23746149.2020.1726207

D. J. Park*, Y. H. Ahn*

• 5. Identifying different types of microorganisms with terahertz spectroscopy

Biomedical Optics Express 11, 406 (2020); DOI: 10.1364/BOE.376584

S. A. Yoon, S. H. Cha, S. W. Jun, S. J. Park, J.-Y. Park, S. Lee, H. S. Kim, Y. H. Ahn*

2019

• 1. Light Intensity-dependent Variation in Defect Contributions to Charge Transport and Recombination in a Planar MAPbI3 Perovskite Solar Cell

Scientific Reports 9, 19846 (2019); DOI: 10.1038/s41598-019-56338-6

S. Ryu, D. C. Nguyen, N. Y. Ha, H. J. Park, Y. H. Ahn, J. Y. Park, S Lee*

• 2. Investigation of Sensitivity Distribution in THz Metamaterials Using Surface Functionalization

Current Optics and Photonics 3, 566 (2019); DOI: 10.3807/COPP.2019.3.6.566

S. H. Cha, S. J. Park, Y. H. Ahn*

• 3. A Development of Theoretical Model for Strong-field Photoemission in 2-dimensional Conducting Sheet

Journal of the Korean Physical Society 75,  882 (2019); DOI: 10.3938/jkps.75.882

D. J. Park*, Y. H. Ahn

• 4. Efficient Large-Scale Removal of Poly(methyl methacrylate) Layers by Using a Methyl Isobutyl Ketone Solution

Journal of the Korean Physical Society 75, 817 (2019); DOI: 10.3938/jkps.75.817

B. H. Son, Y. H. Ahn*

• 5. Electronic control of ultrafast field emission in carbon nanotube gaps

Applied Physics Letters 115, 163102 (2019); DOI: 10.1063/1.5097724

B. H. Son, D. J. Park, Y. H. Ahn*

• 6. Large-scale chemical vapor deposition growth of highly crystalline MoS2 thin films on various substrates and their optoelectronic properties

Current Applied Physics 19, 1127 (2019); DOI: 10.1016/j.cap.2019.07.007

V. T. Nguyen, S. Ha, D.-I. Yeom, Y. H. Ahn, S. Lee, J.-Y. Park*

• 7. Increasing the sensitivity of terahertz split ring resonator metamaterials for dielectric sensing by localized substrate etching

Optics Express 27, 23164 (2019); DOI: 10.1364/OE.27.023164

K. Meng, S. J. Park*, A. D. Burnett, T. Gill, C. D. Wood, M. Rosamond, L. H. Li, L. Chen, D. R. Bacon, J. R. Freeman, P. Dean, Y. H. Ahn, E. H. Linfield, A. G. Davies, J. E. Cunningham

• 8. Strain Engineering of the Berry Curvature Dipole and Valley Magnetization in Monolayer MoS2

Physical Review Letters 123, 036806 (2019); DOI: 10.1103/PhysRevLett.123.036806

J. Son, K. H. Kim, Y. H. Ahn, H. W. Lee*, J. Lee*

• 9. Electronic band alignment in AlGaN/GaN high electron-mobility transistors investigated using scanning photocurrent microscopy

Current Applied Physics 19, 406 (2019); DOI: 10.1016/j.cap.2019.01.008

Y. C. Kim, B. H. Son, H. Y. Jeong, K. H. Park, Y. H. Ahn*

2018

• 1. Direct Measurement of Diffusion Length in Mixed Lead-halide Perovskite Films Using Scanning Photocurrent Microscopy

Current Optics and Photonics 2, 514 (2018); DOI: 10.3807/COPP.2018.2.6.514

A. R. Kim, B. H. Son, H. S. Kim, Y. H. Ahn*

• 2. Humidity sensing using THz metamaterial with silk protein fibroin

Optics Express 26, 33575 (2018); DOI: 10.1364/OE.26.033575

H. S. Kim, S. H. Cha, B. Roy, S. Kim, Y. H. Ahn*

• 3. Enhanced sensitivity in THz plasmonic sensors with silver nanowires

Scientific Reports 8, 15536 (2018); DOI: 10.1038/s41598-018-33617-2

J. T. Hong, S. W. Jun, S. H. Cha, J. Y. Park, S. Lee, G. A. Shin, Y. H. Ahn*

• 4. Ultrafast Strong-Field Tunneling Emission in Graphene Nanogaps

ACS Photonics 5, 3943 (2018); DOI: 10.1021/acsphotonics.8b00857; Cover for Oct. 2018

B. H. Son, H. S. Kim, J.-Y. Park, S. Lee, D. J. Park* and Y. H. Ahn*

• 5. Resonance Characteristics of THz Metamaterials Based on a Drude Metal with Finite Permittivity

Current Optics and Photonics 2, 378 (2018); DOI: 10.3807/COPP.2018.2.4.378

S. W. Jun, Y. H. Ahn*

• 6. Phototransistors with Negative or Ambipolar Photoresponse Based on As-Grown Heterostructures of Single-Walled Carbon Nanotube and MoS2

Advanced Functional Materials 28, 1802572 (2018); DOI: 10.1002/adfm.201802572

V. T. Nguyen, W. Yim, S. J. Park, B. H. Son, Y. C. Kim, T. T. Cao, Y. Sim, Y.-J. Moon, V. C. Nguyen, M.-J. Seong, S.-K. Kim, Y. H. Ahn, S. Lee, and J.-Y. Park*

• 7. Facile fabrication of mesoporous photoanodes for dye-sensitized solar cells by microwave sintering of binder-free TiO2 paste

Journal of Physics D: Applied Physics 51, 676 (2018); DOI: 10.1088/1361-6463/aad4ed

S. Y. Kim, S. Y. Ryu, N. Y. Ha, Y. H. Ahn, J. Y. Park, S Lee*

• 8. Enhanced nucleation and growth of HfO2 thin films grown by atomic layer deposition on graphene

Journal of Alloys and Compounds 742, 676 (2018); DOI: 10.1016/j.jallcom.2018.01.273

S. B. Kim, Y. H. Ahn, J.-Y. Park, S. W. Lee*

• 9. Electrical properties of ion gels based on PVDF-HFP applicable as gate stacks for flexible devices

Current Applied Physics 18, 500 (2018); DOI: 10.1016/j.cap.2018.02.017

K. Chae, N. D. Cuong, S. Ryu, D.-I Yeom, Y. H. Ahn, S. Lee, J.-Y. Park*

• 10. Evaluation of Transport Parameters in MoS2/Graphene Junction Devices Fabricated by Chemical Vapor Deposition

ACS Appl. Mater. Interfaces 10, 5771 (2018); DOI: 10.1021/acsami.7b16177

Y. C. Kim, V. T. Ngyuen, S. Lee, J.-Y Park*, Y. H. Ahn*

2017

• 1. Carbon Nanotubes as Etching Masks for the Formation of Polymer Nanostructures

ACS Appl. Mater. Interfaces 9, 44053 (2017); DOI: 10.1021/acsami.7b18035

W. Yim, S. J. Park, S. Y. Han, Y. H. Park, S. W. Lee, H. J. Park, Y. H. Ahn, S. Lee, J.-Y Park*

• 2. Electron beam induced removal of PMMA layer used for graphene transfer

Sci. Rep. 7, 18058 (2017); DOI: 10.1038/s41598-017-18444-1

B. H. Son, H. S. Kim, H. S. Jeong, J.-Y. Park, S. Lee, Y. H. Ahn*

• 3. Accurate Measurement of THz Dielectric Constant Using Metamaterials on a Quartz Substrate

Curr. Opt. Photon. 1, 637 (2017); DOI: 10.3807/COPP.2017.1.6.637

S. J. Park, Y. H. Ahn*

• 4. Terahertz Nanoprobing of Semiconductor Surface Dynamics

Nano Letters 8, 6397 (2017); DOI: 10.1021/acs.nanolett.7b03289

G. Choi, Y. M. Bhak, T. Kang, Y. Lee, B. H. Son, Y. H. Ahn, M. Seo*, D. S. Kim*

• 5. Effects of Organic Thin Films on Local Resonance of Metamaterials under Photoexcitation

Curr. Opt. Photon. 1, 372 (2017); DOI: 10.3807/COPP.2017.1.4.372

M. S. Song, I. W. Hwang, C. L. Lee, C. Kang, C. S. Kee, S. J. Park, Y. H. Ahn, D. J. Park, J. W. Lee*

• 6. Sensing viruses using terahertz nano-gap metamaterials

Biomedical Optics Express 8, 3551 (2017); DOI: 10.1364/BOE.8.003551

S. J. Park, S. H. Cha, G. A. Shin, Y. H. Ahn*

• 7. Electronic Band Alignment at Complex Oxide Interfaces Measured by Scanning Photocurrent Microscopy

Sci. Rep. 7, 3824 (2017); DOI: 10.1038/s41598-017-04265-9

J. H. Yoon, H. J. Jung, J. T. Hong, J. Y. Park, S. Lee, S. W. Lee, Y. H. Ahn*

• 8. Resonance Switching Using Ultrafast Laser in THz Plasmonic Devices Based on Hybrid Structure of Semiconductor and Carbon Nanotube

J. Kor. Phys. Soc. 70, 1037 (2017); DOI: 10.3938/jkps.70.1037

J. T. Hong, Y. H. Ahn*, S. B. Choi, D. J. Park*

• 9. Terahertz slot antenna devices fabricated on silver nanowire network films

Opt. Mater. Express 7, 1679 (2017); DOI: 10.1364/OME.7.001679

J. T. Hong, S. J. Park, J-. Y. Park, S. Lee, Y. H. Ahn*

• 10. Fabrication of terahertz metamaterials using electrohydrodynamic jet printing for sensitive detection of yeast

J. Micromech. Microeng. 27, 035009 (2017); DOI: 10.1088/1361-6439/aa5a9f

A. Tenggara, S. Park, H. Yudistira, Y. H. Ahn*, D. Byun*

• 11. Contributions of Poly(3-hexylthiophene) Nanowires to Alteration of Vertical Inhomogeneity of Bulk-Heterojunction Active Layers and Improvements of Light-Harvesting and Power-Conversion Efficiency of Organic Solar Cells

Organic Electronics 42, 372 (2017); DOI: 10.1016/j.orgel.2016.12.063

S. Y. Joe, S Ryua, D. C. Nguyen, J. H. Yim, H. Jeong, N. Y. Ha, Y. H. Ahn, J. Y. Park, S. Lee*

• 12. True nature of active layers in organic solar cells fabricated by sequential casting of donor and acceptor layers

Physica Status Solidi (RRL) 11, 1600415 (2017); DOI: 10.1002/pssr.201600415

J. Y. Yim, S. Y. Joe, D. C. Nguyen, S. Y. Ryu, N. Y. Ha, Y. H. Ahn, J. Y. Park, S. Lee*

• 13. Hole-extraction layer dependence of defect formation and operation of planar CH3NH3PbI3 perovskite solar cells

Physica Status Solidi (RRL) 11, 1600395 (2017); DOI: 10.1002/pssr.201600395

D. C. Nguyen, S. Y. Joe, N. Y. Ha, H. J. Park, J. Y. Park, Y. H. Ahn, S. Lee*

• 14. Crystallization Kinetics of Lead Halide Perovskite Film Monitored by In Situ Terahertz Spectroscopy

J. Phys. Chem. Lett. 8, 401 (2017); DOI: 10.1021/acs.jpclett.6b02691

S. J. Park, A. R. Kim, J. T. Hong, J. Y. Park, S. Lee, Y. H. Ahn*

2016

• 1. Differential Transmission Spectra of Terahertz Metamaterial Resonances for Sensing Microorganisms

Korean Journal of Optics and Photonics 27, 229 (2016); DOI: 10.3807/KJOP.2016.27.6.229

S. J. Park, Y. H. Ahn* (*written in Korean)

• 2. UV-induced terahertz wave modulation in freestanding ZnO nanowire films

Opt. Mater. Express 6, 3751 (2016); DOI: 10.1364/OME.6.003751

J. T. Hong, J. Y. Park, S. Lee, Y. H. Ahn*

• 3. Enhanced Nucleation of High‑k Dielectrics on Graphene by Atomic Layer Deposition

Chemistry of Materials 28,7268 (2016); DOI: 10.1021/acs.chemmater.6b02486

Y. H. Park, M. H. Kim, S. B. Kim, H. J. Jung, K. Chae, Y. H. Ahn, J. Y. Park, F. Rotermund*, S. W. Lee*

• 4. Effective Sensing Volume of Terahertz Metamaterial with Various Gap Widths

Journal of the Optical Society of Korea 20, 628 (2016); DOI: 10.3807/JOSK.2016.20.5.628

S. J. Park, S. A. N. Yoon, Y. H. Ahn*

• 5. Control of device characteristics by passivation of graphene field effect transistors with polymers

Curr. Appl. Phys. 16, 6851 (2015); DOI: 10.1016/j.cap.2016.08.022

G. Jang, W. Yim, Y. H. Ahn, S. Lee, J. Y. Park*

• 6. Observation of Charge Separation and Space-Charge Region in Single-Crystal P3HT/C60 Heterojunction Nanowires

Angewandte Chemie 128, 1506 (2016); DOI: 10.1002/anie.201603961

K. S. Park, K. S. Lee, J. Baek, L. Lee, B. H. Son, Y. Koo Lee, Y. H. Ahn, W. I. Park, Y. Kang, M. M. Sung*

• 7. Dielectric constant measurements of thin films and liquids using terahertz metamaterials

RSC Adv. 6, 69381 (2016); DOI: 10.1039/c6ra11777e

S. J. Park, S. A. N. Yoon, Y. H. Ahn*

• 8. Characterization of chemical doping of graphene by in-situ Raman Spectroscopy

Applied Physics Letters 108, 203111 (2016); DOI: 10.1063/1.4950969

S. J. Kim, S. J. Park, H. Y. Kim, G. S. Jang, D. J. Park, J.-Y. Park, S. Lee, Y. H. Ahn*

2015

• 1. Electron Beam Induced Current on Carbon Nanotubes Measured through Substrate Electrodes

J. Kor. Phys. Soc. 67, 1773 (2015); DOI: 10.3938%2Fjkps.67.1773

J. K. Park, Y. H. Ahn*

• 2. Terahertz-triggered phase transition and hysteresis narrowing in a nanoantenna patterned vanadium dioxide film

Nano Lett. 15, 5893 (2015); DOI: 10.1021/acs.nanolett.5b01970

Z. J. Thompson, A. Stickel, Y. G. Jeong, S. Han, B. H. Son, M. J. Paul, B. Lee, A. Mousavian, G. Seo, H. T. Kim, Y. S. Lee, D. S. Kim* (*PI not included)

• 3. Terahertz metamaterial sensing on polystyrene microbeads: shape dependence

Opt. Mater. Express  5, 2150 (2015); DOI: 10.1364/OME.5.002150

S. J. Park, S. W. Jun, A. R. Kim, Y. H. Ahn*

• 4. Suspended single-walled carbon nanotube fluidic sensors

Nanoscale 7, 15421 (2015); DOI: 10.1039/C5NR03215F

B. H. Son, J. Y. Park, S. Lee, Y. H. Ahn*

• 5. Non-Contact Local Conductance Mapping of Individual Graphene Oxide Sheets during the Reduction Process

J. Phys. Chem. Lett. 6, 2629 (2015); DOI: 10.1021/acs.jpclett.5b01008

H. Jeong, K. M. Lee, Y. H. Ahn, S. Lee, J.-Y. Park*

• 6. Active control of all-fiber graphene devices with electrical gating

Nature Communications 6, 6851 (2015); DOI: 10.1038/ncomms7851

E. J. Lee, S. Y. Choi, H. Jeong, N. H. Park, W. Yim, M. H. Kim, J.-K. Park, S. Son, S. Bae, S. J. Kim, Y. H. Ahn, K. J. Ahn, B. H. Hong, J.-Y.Park, F. Rotermund*, D.-I. Yeom*

• 7. Universal Efficiency Improvement in Organic Solar Cells Based on a Poly(3-hexylthiophene) Donor and an Indene-C60 Bisadduct Acceptor with Additional Donor Nanowires

ChemPhysChem 16, 1217 (2015); DOI: 10.1002/cphc.201402762

S. Y. Joe, J. H. Yim, S. Y. Ryu, N. Y. Ha, Y. H. Ahn, J. Y. Park, S. Lee*

• 8. Suppressing spontaneous polarization of p-GaN by graphene oxide passivation: Augmented light output of GaN UV-LED

Scientific Reports 5, 7778 (2015), ; DOI: 10.1038/srep07778

H. Jeong, S. Y. Jeong, D. J. Park, H. J. Jeong, S. Jeong, J. T. Han, H. J. Jeong, S. Yang, H. Y. Kim, K. J. Baeg, S. J. Park, Y. H. Ahn, E. K. Suh, G. W. Lee*, Y. H. Lee*, M. S. Jeong*

2014

• 1. Sensitive detection of yeast using terahertz slot antennas

Opt. Express 22, 30467 (2014); DOI: 10.1364/OE.22.030467

S. J. Park, B. H. Son, S. J. Choi, H. S. Kim, Y. H. Ahn*

• 2. Substrate Effects on Terahertz Metamaterial Resonances for Various Metal Thicknesses

J. Korean Phys. Soc. 65, 1843 (2014); DOI: 10.3938/jkps.65.1843

S. J. Park, Y. H. Ahn*

• 3. Imaging surface charge distribution near carbon nanotube device in aqueous environments

Appl. Phys. Lett. 105, 223101 (2014); DOI: 10.1063/1.4902401

J. K. Park, B. H. Son, J. Y. Park, S. Lee, Y. H. Ahn*

• 4. Correlating nucleation density with heating ramp rates in continuous graphene film formation

Carbon 80, 708 (2014); DOI: 10.1016/j.carbon.2014.09.016

D. H. Jung, C. Kang, B. H. Son, Y. H. Ahn, J. S. Lee*

• 5. Imaging Ultrafast Carrier Transport in Nanoscale Field-Effect Transistors

ACS Nano 8, 11361 (2014); DOI: 10.1021/nn5042619 SPIE newsroom

B. H. Son, J. K. Park, J. T. Hong, J. Y. Park, S. Lee, Y. H. Ahn*

• 6. Fully Solution-Processed Transparent Conducting Oxide-Free Counter Electrodes for Dye-Sensitized Solar Cells: Spray-Coated Single-Wall Carbon Nanotube Thin Films Loaded with Chemically- Reduced Platinum Nanoparticles

ACS Appl. Mater. Interfaces 6, 13430 (2014); DOI: 10.1021/am5019447

S. Y. Kim, Y. Kim, K. M. Lee, W. S. Yoon, H. S. Lee, J. T. Lee, S. J. Kim, Y. H. Ahn, T. K. Lee, S. Lee*

• 7. Diffusion Length in Nanoporous TiO2 Films under Above-Band-Gap Illumination

AIP Adv. 4, 067106 (2014); DOI: 10.1063/1.4881875

J. D. Park, B. H. Son, J. K. Park, S. Y. Kim, J. Y. Park, S. Lee, Y. H. Ahn*

• 8. Quantitative non-contact voltage profiling of quasi one-dimensional nanoelectronic devices

Appl. Phys. Lett. 104, 213102 (2014); DOI: 10.1063/1.4880733

H. Jeong, Y. H. Ahn, S. Lee, J. Y. Park*

• 9. Detection of microorganisms using terahertz metamaterials

Scientific Reports 4, 4988 (2014); DOI: 10.1038/srep04988

S. J. Park, J. T. Hong, S. J. Choi, H. S. Kim, W. K. Park, S. T. Han, J. Y. Park, S. Lee, D. S. Kim, Y. H. Ahn*

• 10. Charge Transport in Light Emitting Devices Based on Colloidal Quantum Dots and a Solution-Processed Nickel Oxide Layer

ACS Appl. Mater. Interfaces 6, 7286 (2014); DOI: 10.1021/am500593a

H. T. Nguyen, H. Jeong, J. Y. Park, Y. H. Ahn, S. Lee*

• 11. Dielectric substrate effect on the metamaterial resonances in terahertz frequency range

Curr. Appl. Phys. 14, 570 (2014); DOI: 10.1016/j.cap.2014.01.015

D. J. Park, S. J. Park, I. Park, Y. H. Ahn*

• 12. Fully Solution-Processed Semitransparent Organic Solar Cells with a Silver Nanowire Cathode and a Conducting Polymer Anode

ACS Nano 3, 2857 (2014); DOI: 10.1021/nn406672n

J. H. Yim, S. Y. Joe, C. Pang, K. M. Lee, H. Jeong, J. Y. Park, Y. H. Ahn, J. C. de Mello*, S. Lee*

2013

• 1. Dielectric Constant Engineering of Single-Walled Carbon Nanotube Films for Metamaterials and Plasmonic Devices

J. Phys. Chem. Lett. 4, 3950 (2013); DOI: 10.1021/jz4020053

J. T. Hong, D. J. Park, J. H. Yim, J. K. Park, J. Y. Park, S. Lee, Y. H. Ahn*

• 2. High-speed scanning photocurrent imaging techniques on nanoscale devices

Curr. Appl. Phys. 13, 2076 (2013); DOI: 10.1016/j.cap.2013.08.019

J. K. Park, B. H. Son, J. Y. Park, S. Lee, Y. H. Ahn*

• 3. Resonant transmission of terahertz waves through metallic slot antennas on various dielectric substrates

Curr. Appl. Phys. 13, 753 (2013); DOI: 10.1016/j.cap.2012.11.018

D. J. Park, J. T. Hong, J. K. Park, S. B. Choi, B. H. Son, F. Rotermunda, S. Lee, K. J. Ahn, D. S. Kim, Y. H. Ahn*

• 4. Terahertz conductivity of reduced graphene oxide films

Opt. Express 21, 7633 (2013); DOI: 10.1364/OE.21.007633

J. T. Hong, K. M. Lee, B. H. Son, S. J. Park, D. J. Park, J. Y. Park, S. Lee, and Y. H. Ahn*

2012

• 1. Diffusion Length in Nanoporous Photoelectrodes of Dye-Sensitized Solar Cells under Operating Conditions Measured by Photocurrent Microscopy

J. Phys. Chem. Lett. 3, 3632 (2012); DOI: 10.1021/jz301751j

J.-K. Park, J.-C. Kang, S. Y. Kim, B. H. Son, J.-Y. Park, S. Lee, and Y. H. Ahn*

• 2. Transfer-Printing of As-Fabricated Carbon Nanotube Devices onto Various Substrates

Adv. Mater. 24 4499 (2012); DOI: 10.1002/adma.201201794

Q. N. Thanh, H. Jeong, J. Kim, J. W. Kevek, Y. H. Ahn, S. Lee, E. D. Minot, J. Y. Park*

• 3. Effects of humidity on the electrical characteristics of ZnO nanowire devices

Physica Status Solidi A 209, 972 (2012); DOI: 10.1002/pssa.201127460

J. Kim, H. S. Jeong, Y. H. Ahn, S. Lee, J.-Y. Park*

• 4. Low temperature cathodoluminecence and electron beam induced current studies of single GaN nanowires

Appl. Phys. Lett. 100, 153110 (2012); DOI: 10.1063/1.3702797

E. Oh*, B. W. Lee, S. J. Shim, H. J. Choi, B. H. Son, Y. H. Ahn, L. S. Dang

• 5. Efficient mode-locking of sub–70 fs Ti:sapphire laser by graphene saturable absorber

Appl. Phys. Express 5, 032701 (2012);DOI: 10.1143/APEX.5.032701

I. H. Baek, H. W. Lee, S. Bae, B. H. Hong, Y. H. Ahn, D. I. Yeom, F. Rotermund*

• 6. Synthesis of vertical arrays of ultra long ZnO nanowires on noncrystalline substrates

Mater. Sci. Eng. B 177, 132 (2012); DOI: 10.1016/j.mseb.2011.10.020

B. J. Kwon, K. M. Lee, H. Y. Shin, J. Kim, J. Liu, S. Yoon, S. Lee, Y. H. Ahn, J. Y. Park*

• 7. Terahertz Wave Applications of Single-Walled Carbon Nanotube Films with High Shielding Effectiveness

Appl. Phys. Express 5, 015102 (2012)

J. T. Hong, D. J. Park, J. Y. Moon, S. B. Choi, J. K. Park, F. Rotermund, J. Y. Park, S. Lee, Y. H. Ahn*

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