Organic Photodetectors Using Triplet Materials Doped in Polyalkylfluorene
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概要
- 論文の詳細を見る
The characteristics of violet-sensitive organic photodetectors (OPDs) utilizing polyalkylfluorene and triplet materials have been studied as a host and a dopant material, respectively. For the photo absorption layer, poly(9, 9-dioctylfluorene) [PFO] and a phosphorescent iridium complex (Iridium (III) bis(2-(4, 6-difluorophenyl)pyridinato-N, C2) [FIrpic] or Iridium (III) bis(2-(2-benzothienyl)pyridinato-N, C3)(acetyl-acetonate) [(btp)2Ir(acac)]) were used as a host and a dopant material, respectively. PFO: (btp)2Ir(acac) device showed less photocurrent than PFO device because (btp)2Ir(acac) enhances recombination of the photo generated carriers in the photo absorption layer. On the other hand, PFO : FIrpic device showed larger photocurrent than PFO device due to triplet energy transfer from FIrpic to PFO. A cutoff frequency of 20MHz was observed using a sinusoidal modulated violet laser light illumination under the reverse bias of 8V.
- （社）電子情報通信学会の論文
- 2008-12-01
著者
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KAJII Hirotake
Center for Advanced Science and Innovation, Osaka University
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OHMORI Yutaka
Center for Advanced Science and Innovation, Osaka University
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Ohmori Yutaka
Center For Advanced Science And Innovation Osaka University
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Kajii Hirotake
Center For Advanced Science And Innovation Osaka University
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HAMASAKI Tatsunari
Center for Advanced Science and Innovation, Osaka University
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MORIMUNE Taichiro
Takuma National College of Technology
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Hamasaki Tatsunari
Center For Advanced Science And Innovation Osaka University
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Kajii Hirotake
Osaka Univ. Suita‐shi Jpn
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Ohmori Yutaka
Osaka Univ. Suita‐shi Jpn
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Ohmori Yutaka
Center for Advanced Science and Innovation (CASI), Osaka University
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Kajii Hirotake
Center for Advanced Science and Innovation (CASI), Osaka University
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