The role of the third component in ternary organic solar cells

被引:442
作者
Gasparini, Nicola [1 ]
Salleo, Alberto [2 ]
McCulloch, Iain [1 ,3 ,4 ]
Baran, Derya [1 ]
机构
[1] KAUST, Div Phys Sci & Engn PSE, KSC, Thuwal, Saudi Arabia
[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
[3] Imperial Coll London, Dept Chem, London, England
[4] Imperial Coll London, Ctr Plast Elect, London, England
基金
美国国家科学基金会; 英国工程与自然科学研究理事会;
关键词
POWER CONVERSION EFFICIENCY; COMPATIBLE NONFULLERENE ACCEPTORS; SMALL-MOLECULE ACCEPTOR; OPEN-CIRCUIT VOLTAGE; INDENE-C-60; BISADDUCT; BLEND MORPHOLOGY; LARGE-AREA; POLYMER; FULLERENE; ALLOY;
D O I
10.1038/s41578-019-0093-4
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Ternary organic solar cells (TSCs) contain a single three-component photoactive layer with a wide absorption window, which is obtained without the need for multiple stacks. Subsequently, TSCs have attracted great interest in the photovoltaics field. Through careful selection of the three (or more) active components that form the photoactive layer, all photovoltaic parameters can be simultaneously enhanced within a TSC-a strategy that has resulted in record efficiencies for single-junction solar cells. In this Review, we outline key developments in TSCs, with a focus on the central role of the third component in achieving record efficiencies. We analyse the effects of the third component on the nanomorphology of the bulk heterojunction and the photovoltaic parameters of TSCs. Moreover, we discuss the charge-transfer and/or energy-transfer mechanisms and nanomorphology models that govern the operation of TSCs. We consider both polymer and small-molecule donors as well as fullerenes and recently developed non-fullerene acceptors. In addition, we summarize the recent success of TSCs in mitigating the stability issues of binary solar cells. Finally, we provide a perspective on the advantages of ternary blends and suggest design strategies for highly efficient and stable devices for commercial photovoltaics.
引用
收藏
页码:229 / 242
页数:14
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