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Fabrication and characteristics of polyfluorene based organic photodetectors using fullerene derivatives
- Source :
-
Thin Solid Films . Nov2009, Vol. 518 Issue 2, p548-550. 3p. - Publication Year :
- 2009
-
Abstract
- Abstract: The characteristics of organic photodetectors (OPDs) by solution process using one of the polyfluorene derivatives poly(9,9-dioctylfluorene-co-bithiophene) (F8T2) and two fullerene derivatives [6-6]phenyl-C61-butyric acid methyl ester (PCBM) or N-Ts aziridinofullerene (TsAF) are investigated. F8T2:PCBM devices showed good rectifying characteristics in a dark state and photosensitive characteristics, and fast frequency responses. Weight ratio of 1:1 device showed larger photocurrent than 1:4 device and obtained over 50MHz of cutoff frequency under reverse bias voltage of 10V. This result suggests that F8T2:PCBM device can be applied to a photodetector for detecting several tens of megahertz optical signals under blue light irradiation. The polarity of J–V characteristics of F8T2:fullerene derivative device is strongly affected by charge injection and extraction between fullerene derivative and electrodes. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00406090
- Volume :
- 518
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Thin Solid Films
- Publication Type :
- Academic Journal
- Accession number :
- 44696591
- Full Text :
- https://doi.org/10.1016/j.tsf.2009.07.123