活动层
材料科学
兴奋剂
有机太阳能电池
能量转换效率
光电子学
聚合物太阳能电池
溶剂化
三元运算
异质结
图层(电子)
纳米技术
化学工程
复合材料
有机化学
溶剂
化学
聚合物
薄膜晶体管
计算机科学
程序设计语言
工程类
作者
Wenyue Xue,Zezhou Liang,Yabing Tang,Chao Zhao,Lihe Yan,Wei Ma,Han Yan
标识
DOI:10.1002/adfm.202304960
摘要
Abstract Organic solar cells (OSCs) process fascinating solution‐printing capability to achieve low‐cost and large‐scale manufacture. However, the rapid power conversion efficiency (PCE) decay with active layer thickness enlargement inhibits the implement of OSCs’ potential advantages. To overcome the bottlenecks of PCE decay in thick active layer OSCs, the electrical doping with componential selectivity in bulk heterojunction (BHJ) film is achieved by introducing a solid solvation additive. Benefiting from the higher exciton splitting efficiency together with the longer drift ( L dr ) and diffusion ( L diff ) lengths, an OSC with 100 nm BHJ film demonstrates a PCE increment from 16.44% to 18.24% with prolonged dark and illuminated storage stabilities. Applying the solid solvation assisted (SSA) doping method in the OSCs with 500 nm active layer, the PCE significantly increases by 31.9%, from the original value of 11.79% to 15.55%. It further improves to 15.84% in a ternary blend thick‐film device, which is the record value to the best of our knowledge. Besides, the SSA doping narrows the PCE gap between the 0.04 and 1 cm 2 devices. All improvements demonstrate the great potential of SSA doping for OSC commercial manufacture, since it optimizes the photovoltaic performance under all practical conditions of long‐term, thick‐film, and large‐area.
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