Doping effect of ethylcarbazole-contained-silole in blue-sensitive organic photoconductive device
| Autor: | Takeshi Fukuda, Ken Hatano, Zentaro Honda, Norihiko Kamata, Keita Mori, Sho Kimura |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Photocurrent
solution process organic photoconductive device silole derivative Materials science business.industry Photoconductivity Doping Analytical chemistry General Chemistry fluorene polymer Condensed Matter Physics color selectivity carrier delocalization Optoelectronics General Materials Science Quantum efficiency Reference device business Solution process organic image sensor Dark current |
| Zdroj: | Molecular Crystals and Liquid Crystals. 566(1):54-60 |
| ISSN: | 1542-1406 |
| Popis: | The photoconductive characteristics of the solution-processed organic device was improved by doping 1,1-dimethyl-2,5-bis(9-ethylcarbazol)-3,4-diphenylsilole (EtCz-silole) in poly(dioctylfluorenyl-co-benzo-thiadiazole) (F8BT). The maximum external quantum efficiency of 27% at −38 MV/m was achieved when the doping concentration of EtCz-silole was 40 wt%. This value was approximately 160 times higher than that of the reference device with F8BT only (0.17%). In addition, the signal-to-noise ratio (S/N), i.e., photocurrent density/dark current density was improved by doping EtCz-silole due to the increased photocurrent density and the reduced dark current density. The highest S/N of 1.4 × 104 was observed by optimizing the concentration of EtCz-silole. This is an Author's Accepted Manuscript of an article published in Doping Effect of Ethylcarbazole-Contained-Silole in Blue-Sensitive Organic Photoconductive Device in the Molecular Crystals and Liquid Crystals (12 Sep 2012) [copyright Taylor & Francis], available online at: http://www.tandfonline.com/10.1080/15421406.2012.701120. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|