Broadband photomultiplication organic photodetectors (PMOPDs) can be achieved with a double-layered active layer prepared from IEICO-4F : PBDB-T blend solutions with different weight ratios (1 : 1 or 3 : 100, wt/wt). The response range of the double-layered PMOPDs covers from 310 nm to 930 nm, determined by the photon harvesting range of the IEICO-4F : PBDB-T (1 : 1, wt/wt) layer. The IEICO-4F : PBDB-T (3 : 100, wt/wt) layer was used as a PM layer in the double-layered PMOPDs, achieving external quantum efficiency (EQE) more than 100% based on the work mechanism of trap-assisted hole tunneling injection. The trapped electrons in PBDB-T/IEICO-4F/PBDB-T near the Al electrode will makeinterfacial-band-bending to narrow the injection barrier, resulting in hole-tunneling-injection from the external circuit. The polymer PBDB-T can provide an efficient charge transport channel for the injected hole from the external circuit. The specific detectivity (D*) and responsivity (R) of the double-layered PMOPDs are 1.05 ± 0.03 × 10¹² Jones and 0.94 ± 0.03 A W⁻¹ at 810 nm under a −10 V bias, respectively.

中文翻译：

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宽带光电倍增有机光电探测器

宽带光电倍增有机光电探测器（PMOPD）可以通过由IEICO-4F：PBDB-T混合溶液以不同的重量比（1：1或3：100，wt / wt）制备的双层活性层实现。双层PMOPD的响应范围从310 nm到930 nm，这取决于IEICO-4F：PBDB-T（1：1，wt / wt）层的光子收集范围。IEICO-4F：PBDB-T（3：100，wt / wt）层用作双层PMOPD中的PM层，基于阱阱的工作机理实现了超过100％的外部量子效率（EQE）辅助空穴隧穿注入。Al电极附近的PBDB-T / IEICO-4F / PBDB-T中捕获的电子将发生界面能带弯曲，从而使注入势垒变窄，从而导致从外部电路进行空穴隧穿注入。聚合物PBDB-T可以为从外部电路注入的空穴提供有效的电荷传输通道。比探测双层PMOPD在-10 V偏压下在810 nm处的D *）和响应度（R）分别为1.05±0.03×10 ¹² Jones和0.94±0.03 AW ^-1。