Fabrication of three-dimensional hybrid nanostructure-embedded ITO and its application as a transparent electrode for high-efficiency solution processable organic photovoltaic devices.
Well-aligned, high-resolution (10 nm), three-dimensional (3D) hybrid nanostructures consisting of patterned cylinders and Au islands were fabricated on ITO substrates using an ion bombardment process and a tilted deposition process. The fabricated 3D hybrid nanostructure-embedded ITO maintained its excellent electrical and optical properties after applying a surface-structuring process. The solution processable organic photovoltaic device (SP-OPV) employing a 3D hybrid nanostructure-embedded ITO as the anode displayed a 10% enhancement in the photovoltaic performance compared to the photovoltaic device prepared using a flat ITO electrode, due to the improved charge collection (extraction and transport) efficiency as well as light absorbance by the photo-active layer.
Department of Nano-Structured Materials Research, National NanoFab Center (NNFC), 291 Daehak-ro, Yuseong-gu, Daejeon 305-338, Republic of Korea. cwahn@nnfc.re.kr.
Jeong Won
JW
Kim
Department of Nano-Structured Materials Research, National NanoFab Center (NNFC), 291 Daehak-ro, Yuseong-gu, Daejeon 305-338, Republic of Korea. cwahn@nnfc.re.kr and Department of Chemical Engineering and Biotechnology, Korea Polytechnic University, 237, Siheung-si, Gyeonggi-do 15073, Republic of Korea.
Hwan-Jin
HJ
Jeon
Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea. vsepr@gist.ac.kr.
Chang-Lyoul
http://orcid.org/0000-0002-1336-4589
CL
Lee
Department of Nano-Structured Materials Research, National NanoFab Center (NNFC), 291 Daehak-ro, Yuseong-gu, Daejeon 305-338, Republic of Korea. cwahn@nnfc.re.kr.
Chi Won
CW
Ahn