Improving the charge transport of the ternary blend active layer for efficient semitransparent organic solar cells,Energy & Environmental Science

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Improving the charge transport of the ternary blend active layer for efficient semitransparent organic solar cells
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-11-16 , DOI: 10.1039/d0ee03378b
Pan Yin _{1,

2,

3,

4,

5} , Zhigang Yin _{1,

2,

3} , Yunlong Ma _{1,

2,

3} , Qingdong Zheng _{1,

2,

3}

Affiliation

Semitransparent organic solar cells (OSCs) have great potential for vehicle-integrated and building-integrated photovoltaics with their rapidly increased power conversion efficiencies (PCEs). For these purposes, the efficiency of semitransparent OSCs at an adequate transparency should be further increased. In this work, a ladder-type dithienonaphthalene-based acceptor (DTNIF) with a high-lying lowest unoccupied molecular orbital energy level is used as a third component material for ternary OSCs which show increased PCEs with enlarged values in open-circuit voltage, short-circuit current and fill factor. Consequently, outstanding PCEs of 16.73% and 13.49% are achieved for the corresponding opaque and semitransparent ternary OSCs, respectively. The efficiency of 13.49% for the semitransparent OSCs at an average visible transmittance (AVT) of 22.58% is the highest reported to date, to the best of our knowledge. This work provides an effective strategy to fabricate high-performance semitransparent OSCs at high AVT values by using an excellent third component acceptor material.

中文翻译：

为有效的半透明有机太阳能电池改善三元共混活性层的电荷传输

半透明有机太阳能电池（OSC）具有迅速提高的功率转换效率（PCE），在车辆集成光伏和建筑集成光伏领域具有巨大潜力。为此，应进一步提高具有足够透明度的半透明OSC的效率。在这项工作中，具有最高的最低未占用分子轨道能级的梯型二噻吩基萘基受体（DTNIF）被用作三元OSC的第三种成分材料，这些三元OSC显示出PCE增大，开路电压值增大，短路-电路电流和填充系数。因此，相应的不透明和半透明三元OSC分别达到16.73％和13.49％的出色PCE。在平均可见光透射率（AVT）为22的情况下，半透明OSC的效率为13.49％。据我们所知，58％是迄今为止最高的报告。这项工作提供了一种有效的策略，即通过使用出色的第三组分受体材料来制造高AVT值的高性能半透明OSC。

更新日期：2020-11-25

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