Observation of Charge Separation and Space-Charge Region in Single-Crystal P3HT/C-60 Heterojunction Nanowires
- Authors
- Park, Kyung Sun; Lee, Ki Seok; Baek, Jangmi; Lee, Lynn; Son, Byung Hee; Lee, Yong-Eun Koo; Ahn, Yeong Hwan; Park, Won Il; Kang, Youngjong; Sung, Myung M.
- Issue Date
- Aug-2016
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- nanotransfer printing; optoelectronics; organic nanowires; p-n heterojunctions; space-charge region
- Citation
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.55, no.35, pp.10273 - 10277
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
- Volume
- 55
- Number
- 35
- Start Page
- 10273
- End Page
- 10277
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/22289
- DOI
- 10.1002/anie.201603961
- ISSN
- 1433-7851
- Abstract
- We directly observed charge separation and a space-charge region in an organic single-crystal p-n heterojunction nanowire, by means of scanning photocurrent microscopy. The axial p-n heterojunction nanowire had a well-defined planar junction, consisted of P3HT (p-type) and C-60 (n-type) single crystals and was fabricated by means of the recently developed inkjet-assisted nanotransfer printing technique. The depletion region formed at the p-n junction was directly observed by exploring the spatial distribution of photogenerated carriers along the heterojunction nanowire under various applied bias voltages. Our study provides a facile approach toward the precise characterization of charge transport in organic heterojunction systems as well as the design of efficient nanoscale organic optoelectronic devices.
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