- Plasmonic effect of nanosized metals for photovoltaics
- Dye-sensitized solar cells
Room 131-413

Education & Career

Publications (International)
"Graded Bandgap Structure for PbS/CdS/ZnS Quantum-Dot-Sensitized Solar Cells with a PbxCd1-xS Interlayer"
Jongmin Kim, Hongsik Choi, Changwoo Nahm, Chohui Kim, Jae Ik Kim, Woojin Lee, Suji Kang, Byungho Lee, Taehyun Hwang, Helen Hejin Park, and Byungwoo Park*
Appl. Phys. Lett. 102, 183901 (2013).
"A Simple Template-Free 'Sputtering Deposition and Selective Etching' Process for Nanoporous Thin Films and Its Application to Dye-Sensitized Solar Cells"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, Sujin Byun, Suji Kang, Taehyun Hwang, Helen Hejin Park, Jaejung Ko,* and Byungwoo Park*
Nanotechnology 24, 365604 (2013).
"The Role of ZnO-Coating-Layer Thickness on the Recombination in CdS Quantum-Dot-Sensitized Solar Cells"
Hongsik Choi, Jongmin Kim, Changwoo Nahm, Chohui Kim, Seunghoon Nam, Joonhyeon Kang, Byungho Lee, Taehyun Hwang, Suji Kang, Dong Joo Choi, Young-Ho Kim,* and Byungwoo Park*
Nano Energy 2, 1218 (2013).
"The Effect of TiO2-Coating Layer on the Performance in Nanoporous ZnO-Based Dye-Sensitized Solar Cells"
Chohui Kim, Jongmin Kim, Hongsik Choi, Changwoo Nahm, Suji Kang, Sungjun Lee, Byungho Lee, and Byungwoo Park*
J. Power Sources 232, 159 (2013).
"Review Paper: Toward Highly Efficient Quantum-Dot- and Dye- Sensitized Solar Cells"
Hongsik Choi, Changwoo Nahm, Jongmin Kim, Chohui Kim, Suji Kang, Taehyun Hwang, and Byungwoo Park*
Curr. Appl. Phys. 13, S2 (2013).
"Photoluminescence Enhancement by Surface-Plasmon Resonance: Recombination-Rate Theory and Experiments"
Changwoo Nahm,+ Dae-Ryoung Jung,+ Jongmin Kim, Seunghoon Nam, Hongsik Choi, Saeromi Hong, Taehyun Hwang, Taeho Moon,* and Byungwoo Park*
Appl. Phys. Express 6, 52001 (2013).
"Nanostructural Analysis of ZnO:Al Thin Films for Carrier-Transport Mechanisms"
Seung-Yoon Lee, Woojin Lee, Changwoo Nahm, Jongmin Kim, Sujin Byun, Taehyun Hwang, Byung-Kee Lee, Young Il Jang, Sungeun Lee, Heon-Min Lee, and Byungwoo Park*
Curr. Appl. Phys. 13, 775 (2013).
"Electronic Transport and Carrier Concentration in Conductive ZnO:Ga Thin Films"
Changwoo Nahm,+ Sungjin Shin,+ Woojin Lee, Jae Ik Kim, Dae-Ryong Jung, Jongmin Kim, Seunghoon Nam, Sujin Byun, and Byungwoo Park*
Curr. Appl. Phys. 13, 415 (2013).
"The Role of a TiCl4 Treatment on the Performance of CdS Quantum-Dot-Sensitized Solar Cells"
Jongmin Kim, Hongsik Choi, Changwoo Nahm, Chohui Kim, Seunghoon Nam, Suji Kang, Dae-Ryong Jung, Jae Ik Kim, Joonhyeon Kang, and Byungwoo Park*
J. Power Sources 220, 108 (2012).
"The Effect of TiCl4-Treated TiO2 Compact Layer on the Performance of Dye-Sensitized Solar Cell"
Hongsik Choi, Changwoo Nahm, Jongmin Kim, Joonhee Moon, Seunghoon Nam, Chohui Kim, Dae-Ryong Jung, and Byungwoo Park*
Curr. Appl. Phys. 12, 737 (2012).
"Challenges in Synthesizing Carbon-Coated LiFePO4 Nanoparticles from Hydrous FePO4 and Their Electrochemical Properties"
Seunghoon Nam, Sungun Wi, Changwoo Nahm, Hongsik Choi, and Byungwoo Park*
Mater. Res. Bull. 47, 3495 (2012).
"Surface-Plasmon-Coupled Photoluminescence from CdS Nanoparticles with Au Films"
Jae Ik Kim, Dae-Ryong Jung, Jongmin Kim, Changwoo Nahm, Sujin Byun, Sungjun Lee, and Byungwoo Park*
Solid State Commun. 152, 1767 (2012).
"An Effective Oxidation Approach for Luminescence Enhancement in CdS Quantum Dots by H2O2"
Woojin Lee,+ Hoechang Kim,+ Dae-Ryong Jung,+ Jongmin Kim, Changwoo Nahm, Junhee Lee, Suji Kang, Byungho Lee, and Byungwoo Park*
Nanoscale Res. Lett. 7, 672 (2012).
"Surface-Plasmon-Enhanced Photoluminescence of CdS Nanoparticles with Au/SiO2 Nanocomposites"
Dae-Ryong Jung, Jongmin Kim, Changwoo Nahm, Seunghoon Nam, Jae Ik Kim, and Byungwoo Park*
Mater. Res. Bull. 47, 453 (2012).
"Review Paper: Surface Plasmon Resonance for Photoluminescence and Solar-Cell Applications"
Jongmin Kim,+ Hongsik Choi,+ Changwoo Nahm,+ and Byungwoo Park*
Electron. Mater. Lett. 8, 351 (2012).
"Investigation of Electronic and Optical Properties in Al-Ga Codoped ZnO Thin Films"
Woojin Lee, Sungjin Shin, Dae-Ryong Jung, Jongmin Kim, Changwoo Nahm, Taeho Moon,* and Byungwoo Park*
Curr. Appl. Phys. 12, 628 (2012).
"The Effects of 100 nm-Diameter Au Nanoparticles on Dye-Sensitized Solar Cells"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, Dae-Ryong Jung, Chohui Kim, Joonhee Moon, Byungjoo Lee, and Byungwoo Park*
Appl. Phys. Lett. 99, 253107 (2011).
[Virtual Journal of Nanoscale Science & Technology]
"Photoluminescence Enhancement in CdS Nanoparticles by Surface-Plasmon Resonance"
Dae-Ryong Jung, Jongmin Kim, Seunghoon Nam, Changwoo Nahm, Hongsik Choi, Jae Ik Kim, Junhee Lee, Chohui Kim, and Byungwoo Park*
Appl. Phys. Lett. 99, 41906 (2011).
"The Effect of a Blocking Layer on the Photovoltaic Performance in CdS Quantum-Dot-Sensitized Solar Cells"
Jongmin Kim, Hongsik Choi, Changwoo Nahm, Joonhee Moon, Chohui Kim, Seunghoon Nam, Dae-Ryong Jung, and Byungwoo Park*
J. Power Sources 196, 10526 (2011).
[Featured as a Key Scientific Article in Renewable Energy Global Innovations]
"Review Paper: Semiconductor Nanoparticles with Surface Passivation and Surface Plasmon"
Dae-Ryong Jung,* Jongmin Kim, Changwoo Nahm, Hongsik Choi, Seunghoon Nam, and Byungwoo Park*
Electron. Mater. Lett. 7, 185 (2011).
"Nanoporous Pt Thin Films with Superior Catalytic Activities by the Electrochemical Dissolution of Al"
Changwoo Nahm,+ Chunjoong Kim,+ Yejun Park, and Byungwoo Park*
Met. Mater. Inter. 15, 989 (2009).
"Formation of Nanoporous Pt Thin Films by Electrochemical Dissolution"
Chunjoong Kim, Yejun Park, Changwoo Nahm, and Byungwoo Park*
Electron. Mater. Lett. 4, 75 (2008).
"Iron-Phosphate/Pt Nanostructured Electrodes for High-Efficiency Fuel Cells"
Changwoo Nahm, Chunjoong Kim, Yejun Park, Byungjoo Lee, and Byungwoo Park*
Electron. Mater. Lett. 4, 5 (2008).

Presentations (International)
"Nanoporous NiO Thin Films Prepared by Selective Etching for the p-Type Dye-Sensitized Solar Cells"
Hongsik Choi, Changwoo Nahm, Seunghoon Nam, Byungho Lee, Taehyun Hwang, Sangheon Lee, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, December 2013.
"Simple ‘Deposition and Selective Etching’ Process for Nanoporous TiO2 Thin Film and Its Application to Dye-Sensitized Solar Cell"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2012.
"Improved Photovoltaic Performance of CdS Quantum-Dot-Sensitized Solar Cell through ZnO Coating"
Hongsik Choi, Jongmin Kim, Changwoo Nahm, Chohui Kim, Seunghoon Nam, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2012.
"Mixture of Nanoporous Spheres and Nanoparticles for High-Efficiency ZnO-Based Dye-Sensitized Solar Cells"
Chohui Kim, Jongmin Kim, Hongsik Choi, Changwoo Nahm, Suji Kang, Sungjun Lee, Byungho Lee, and Byungwoo Park
Global Photovoltaic Conference 2012 (GPVC2012). Busan, Korea, November 19-21, 2012.
"Simple ‘Deposition and Selective Etching’ Process for Nanoporous TiO2 Thin Film and Its Application to Dye-Sensitized Solar Cells"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, and Byungwoo Park
Global Photovoltaic Conference 2012 (GPVC2012). Busan, Korea, November 19-21, 2012. [Poster by Changwoo Nahm]
"Simple ‘Deposition and Selective Etching’ Process for Nanoporous-TiO2 Thin Film and Its Application to Dye-Sensitized Solar Cell"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, and Byungwoo Park
The 13th Korea - Japan Student Symposium (Seoul National University - Tohoku University). Seoul, Korea, November 7-9, 2012. [Poster by Changwoo Nahm]
"Improved Photovoltaic Performance of CdS Quantum-Dot-Sensitized Solar Cell through ZnO Coating"
Hongsik Choi, Jongmin Kim, Changwoo Nahm, Chohui Kim, Seunghoon Nam, Joonhyeon Kang, Byungho Lee, and Byungwoo Park
The 13th Korea - Japan Student Symposium (Seoul National University - Tohoku University). Seoul, Korea, November 7-9, 2012.
"The Effect of TiO2-Coating Layer on the Performance in Nanoporous ZnO-Based Dye-Sensitized Solar Cells"
Chohui Kim, Jongmin Kim, Hongsik Choi, Changwoo Nahm, Suji Kang, Sungjun Lee, Byungho Lee, and Byungwoo Park
The 13th Korea - Japan Student Symposium (Seoul National University - Tohoku University). Seoul, Korea, November 7-9, 2012.
"Semiconductor Nanoparticles with Surface Passivation and Surface Plasmon for Luminescence and Solar-Cell Applications"
Byungwoo Park, Jongmin Kim, Changwoo Nahm, Hongsik Choi, Seunghoon Nam, and Chohui Kim
International Conference on Electronic Materials and Nanotechnology for Green Environment (ENGE2012). Jeju, Korea, September 16-19, 2012.
"The Effect of TiO2-Coating Layer on the Performance in Nanoporous ZnO-Based Dye-Sensitized Solar Cells"
Chohui Kim, Jongmin Kim, Hongsik Choi, Changwoo Nahm, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2011.
"Interface Control for Highly Efficient Dye- and Quantum-Dot- Sensitized Solar Cells"
Hongsik Choi, Changwoo Nahm, Jongmin Kim, Joonhee Moon, Seunghoon Nam, Chohui Kim, Dae-Ryong Jung, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2011.
"The Effect of a Blocking Layer on the Photovoltaic Performance in CdS Quantum-Dot-Sensitized Solar Cells"
Jongmin Kim, Hongsik Choi, Changwoo Nahm, Joonhee Moon, Chohui Kim, Seunghoon Nam, Dae-Ryong Jung, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2011.
"Photoluminescence Enhancement in CdS Nanoparticles by Surface-Plasmon Resonance"
Dae-Ryong Jung, Jongmin Kim, Seunghoon Nam, Changwoo Nahm, Hongsik Choi, Jae Ik Kim, Junhee Lee, Chohui Kim, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2011.
"The Effects of 100 nm-Diameter Au Nanoparticles on Dye-Sensitized Solar Cells"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, Dae-Ryong Jung, Chohui Kim, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, November 2011. [ by Changwoo Nahm]
"Nanoscale Control of Pt-Based Electrodes"
Changwoo Nahm, Chunjoong Kim, Yejun Park, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, December 2009. [Oral by Changwoo Nahm]
"Nanostructured Pt-Based Electrodes for the Enhanced Electrocatalytic Activities"
Chunjoong Kim, Yejun Park, Changwoo Nahm, and Byungwoo Park
Materials Research Society (MRS) Fall Meeting. Boston, MA, December 2008.
"Nanoporous Pt Thin Films with Enhanced Catalytic Activities by Electrochemical Dissolution of Al"
Changwoo Nahm, Chunjoong Kim, Yejun Park, and Byungwoo Park
The 9th Korea - Japan Student Symposium (Seoul National University - Tohoku University). Seoul, Korea, November 20-22, 2008. [Oral by Changwoo Nahm]
"Nanoporous Pt Thin Films with Superior Catalytic Activities by the Electrochemical Dissolution of Al"
Chunjoong Kim, Yejun Park, Changwoo Nahm, and Byungwoo Park
Materials Research Society (MRS) Spring Meeting. San Francisco, CA, March 2008.
"Nanoporous Pt Thin Films with Superior Catalytic Activities by the Electrochemical Dissolution of Al"
Chunjoong Kim, Yejun Park, Changwoo Nahm, Byungwoo Park
The 3rd Seoul National University - University of Tokyo - Tsinghua University Joint Student Workshop. Seoul, Korea, October 24-27, 2007.
"Nanoscale Interface Control of High-Quality Electrode Materials for Li-Ion Battery and Fuel Cell"
Byungwoo Park, Joon-Gon Lee, Donggi Ahn, Chunjoong Kim, Yejun Park, Yuhong Oh, and Changwoo Nahm
The Second Asian Conference on Electrochemical Power Sources (ACEPS-2). Fudan University, Shanghai, China, October 22, 2007.

Presentations (Domestic)
"The Effect of Surface Treatment on the Photovoltaic Performance in CdS Quantum-Dot-Sensitized Solar Cells"
Jongmin Kim, Hongsik Choi, Changwoo Nahm, Joonhee Moon, Chohui Kim, Seunghoon Nam, Dae-Ryong Jung, and Byungwoo Park
태양전지 연구회 워크숍 2012. Daejeon, Korea, February 28-29, 2012.
"The Effects of 100 nm-Diameter Au Nanoparticles on Dye-Sensitized Solar Cells"
Changwoo Nahm, Hongsik Choi, Jongmin Kim, Dae-Ryong Jung, Chohui Kim, and Byungwoo Park
태양전지 연구회 워크숍 2012. Daejeon, Korea, February 28-29, 2012.
"Interface Control for Highly Efficient Dye- and Quantum-Dot- Sensitized Solar Cells"
Hongsik Choi, Changwoo Nahm, Jongmin Kim, Joonhee Moon, Seunghoon Nam, Chohui Kim, Dae-Ryong Jung, and Byungwoo Park
태양전지 연구회 워크숍 2012. Daejeon, Korea, February 28-29, 2012.
"The Effect of TiO2-Coating Layer on the Performance in Nanoporous ZnO-Based Dye-Sensitized Solar Cells"
Chohui Kim, Jongmin Kim, Hongsik Choi, Changwoo Nahm, and Byungwoo Park
태양전지 연구회 워크숍 2012. Daejeon, Korea, February 28-29, 2012.
"Nanoporous Pt Thin Films with Superior Catalytic Activities by the Electrochemical Dissolution of Al"
Chunjoong Kim, Yejun Park, Changwoo Nahm, and Byungwoo Park
추계금속재료학회. Jeju, Korea, November 5, 2007.