High-Performance Pseudoplanar Heterojunction Ternary Organic Solar Cells with Nonfullerene Alloyed Acceptor
High-Performance Pseudoplanar Heterojunction Ternary Organic Solar Cells with Nonfullerene Alloyed Acceptor
复制标题
具有非富勒烯合金受体的高性能赝平面异质结三元有机太阳能电池
DOI：
10.1002/adfm.201909760
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发表时间：
2020
影响因子：
19
通讯作者：
Chen Yiwang
中科院分区：
文献类型：
--
作者：
Wan Ji;Zhang Lifu;He Qiannan;Liu Siqi;Huang Bin;Hu Lei;Zhou Weihua;Chen Yiwang
绝大多数三元有机太阳能电池都是通过简单地制造体异质结（BHJ）有源层来获得的。由于供体和受体在垂直方向上的分布不合理，提出了一种制备伪平面异质结（PPHJ）三元有机太阳能电池的新方法，以更好地调节活性层的形态。采用序贯溶液处理技术制备了准平面异质结三元有机太阳能电池（P - ternary），其中供体和受体混合物被序贯自旋涂覆。因此，与三元BHJ系统的13.8%的填充因子（FF）相比，当avocv为0.79 V， jscf为25.6 mA cm−2时，功率转换效率（PCE）达到14.2%。同时，通过一系列的深入探索，可能在两个受体之间形成合金受体。这一研究表明，非富勒烯合金受体在实现有效的P -三元有机太阳能电池方面具有很大的潜力。
The vast majority of ternary organic solar cells are obtained by simply fabricating bulk heterojunction (BHJ) active layers. Due to the inappropriate distribution of donors and acceptors in the vertical direction, a new method by fabricating pseudoplanar heterojunction (PPHJ) ternary organic solar cells is proposed to better modulate the morphology of active layer. The pseudoplanar heterojunction ternary organic solar cells (P‐ternary) are fabricated by a sequential solution treatment technique, in which the donor and acceptor mixture blends are sequentially spin‐coated. As a consequence, a higher power conversion efficiency (PCE) of 14.2% is achieved with aVocof 0.79 V,Jscof 25.6 mA cm−2, and fill factor (FF) of 69.8% compared with the ternary BHJ system of 13.8%. At the same time, the alloyed acceptor is likely formed between two the acceptors through a series of in‐depth explorations. This work suggests that nonfullerene alloyed acceptor may have great potential to realize effective P‐ternary organic solar cells.