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Achieving EQE of 16,700% in P3HT: PC71BM based photodetectors by trap-assisted photomultiplication
Li, Lingliang1; Zhang, Fujun1; Wang, Jian1; An, Qiaoshi1; Sun, Qianqian1; Wang, Wenbin1; Zhang, Jian2; Teng, Feng1
刊名SCIENTIFIC REPORTS
2015-03-17
DOI10.1038/srep09181
5
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
关键词[WOS]POLYMER SOLAR-CELLS ; PHOTOCURRENT MULTIPLICATION ; BULK-HETEROJUNCTION ; NANOSCALE MORPHOLOGY ; BUFFER LAYER ; PERFORMANCE ; TEMPERATURE ; FULLERENE ; GAIN
英文摘要We report a trap-assisted photomultiplication (PM) phenomenon in solution-processed polymer photodetectors (PPDs) based on P3H : PC71BM as the active layer, the maximum EQE of 16,700% is obtained for the PPDs with PC71BM doping weight ratio of 1%. The PM phenomenon is attributed to the enhanced hole tunneling injection assisted by trapped electrons in PC71BM near Al cathode, which can be demonstrated by the transient photocurrent curves and EQE spectra of PPDs with different PC71BM doping ratios. The positive effect of trapped electrons in PC71BM near Al cathode on the hole tunneling injection is further confirmed by the simulated optical field and exciton generation rate distributions in the active layer and the EQE spectra of PPDs with Al(1)/P3HT : PC71BM(100 : 1)/Al(2) device structure under forward and reverse biases. This discovery may open a new road for organic materials to be used in highly sensitive photodetectors while preserving the advantages of organic materials.
语种英语
WOS记录号WOS:000351229000010
引用统计
被引频次:46[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146054
专题中国科学院大连化学物理研究所
作者单位1.Beijing Jiaotong Univ, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Li, Lingliang,Zhang, Fujun,Wang, Jian,et al. Achieving EQE of 16,700% in P3HT: PC71BM based photodetectors by trap-assisted photomultiplication[J]. SCIENTIFIC REPORTS,2015,5.
APA Li, Lingliang.,Zhang, Fujun.,Wang, Jian.,An, Qiaoshi.,Sun, Qianqian.,...&Teng, Feng.(2015).Achieving EQE of 16,700% in P3HT: PC71BM based photodetectors by trap-assisted photomultiplication.SCIENTIFIC REPORTS,5.
MLA Li, Lingliang,et al."Achieving EQE of 16,700% in P3HT: PC71BM based photodetectors by trap-assisted photomultiplication".SCIENTIFIC REPORTS 5(2015).
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