The electrical and photoconductivity characteristics of donor-acceptor alternating copolymer using solution process

Shin Woo Jeong, Gi Back Lee, Hyeon Jun Ha, Soon Ki Kwon, Yun Hi Kim, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The authors report on the electrical and photoconductivity characteristics of donor-acceptor alternating copolymer, poly(dioctyloxinapthalenediketopyrrolopyrrole) (PONDPP) with Al/PONDPP/p-Si/Al hybrid organic/inorganic Schottky diode for optoelectronic applications. The fabricated device shows ideality factor value of 2.6 and barrier height of 0.68eV obtained from current-voltage characteristics. The high rectification ratio of 1.86×104 and photo-responsivity of 55mA/W at 650nm is achieved. From results, we found that the fine photo-response and electrical characteristics are attributed to the modified band-gap structure to have Schottky barrier at highest occupied molecular orbital to valence band of silicon and high hole mobility of PONDPP.

Original languageEnglish
Article number243301
JournalApplied Physics Letters
Volume101
Issue number24
DOIs
Publication statusPublished - 2012 Dec 10

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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