超96%近红外光隔热率的高性能半透明有机太阳能电池  

High-performance Semitransparent Organic Solar Cells Exceeding 96%Near-infrared Light Insulation Rate

作　　者：李耀凯 关诗陶 李水兴 左立见[1,2] 陈红征 Yao-kai Li;Shi-tao Guan;Shui-xing Li;Li-jian Zuo;Hong-zheng Chen(State Key Laboratory of Silicon and Advanced Semiconductor,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027;Institute of Information and Functional Materials Research,ZJU-Hangzhou Global Scientific and Technological Innovation Center,Hangzhou 311200)

机构地区：[1]浙江大学硅及先进半导体材料全国重点实验室、高分子科学与工程学系,杭州310027 [2]浙江大学杭州国际科创中心信息与功能材料研究院,杭州311200

出　　处：《高分子学报》2024年第9期1134-1144,共11页Acta Polymerica Sinica

基　　金：国家重点研发计划(项目号2019YFA0705902)资助.

摘　　要：半透明光伏是一种广受关注的太阳能光电转换技术,在吸光供能的同时,还可以保留一定的透光性.但半透明有机太阳能电池(semitransparent organic solar cells,STOPV)要想实现应用,必须解决能量转换效率(power conversion efficiency,PCE)、可见光透过率(average photopic transmittance,APT)与近红外光隔热率(infrared-light rejection rate,IRR)有机统一的问题.不同于传统的单一优化策略,本文工作通过采用高性能三元策略和多层光学调控层的方法来协同改善STOPV的性能.材料层面,通过结合宽带隙给体和2个吸收相似但对称性不同的近红外受体分子,将单结三元不透明有机太阳能电池的效率优化至18.66%.器件层面,提出三重光学调控方案,同时引入减反射层(anti-reflection layer,ARC),二氧化碲(tellurium dioxide,TeO_(2))光学层和带通滤光片(bandpass filter,BF),来优化器件的透光性.最终制备的最佳STOPV,其PCE和APT分别达到了12.82%和35.70%,对应的光利用效率(light utilization efficiency,LUE)为4.6%,并且近红外光隔热率达到96.8%,实现了PCE、APT和IRR的均衡提升.本文提出了一种开发设计高性能STOPV的有效方案,有利于进一步推动STOPV的商业化应用进展.Semitransparent organic solar cells(STOPV)are a widely acknowledged solar energy conversion technology that can simultaneously absorb invisible light for energy production while allowing visible light transmission for transparency.However,regarding STOPV integrated on building to reach practical application in the future,the harmonious unification of power conversion efficiency(PCE),average photopic transmittance(APT),and the infrared-light rejection rate(IRR)must be achieved.In contrast to traditional single-optimization strategies,we present an approach to enhancing STOPV performance by using a ternary strategy coupled with multiple optical modulation engineering.On the materials level,by combining the wide bandgap donor PM6 and two near-infrared acceptors owing similar absorption but different end groups combinations(symmetric molecule BTP-eC9 and asymmetric molecule BTP-S9),we have optimized the efficiency of a single-junction ternary opaque organic solar cell to 18.66%.On the device level,we propose a triple optical manipulation method by integrating an anti-reflection layer(ARC),a tellurium dioxide(TeO_(2))optical layer,and a bandpass filter(BF)into the original STOPV structure,to address the see-saw effect among PCE,APT and IRR.Ultimately,our optimized STOPV achieved a PCE of 12.82%and APT of 35.70%,causing a light utilization efficiency(LUE)of 4.6%,and an infrared-light rejection rate of 96.8%,ranking one of the highest performance multifunction-STOPV.

关 键 词：半透明有机太阳能电池 光学调控 二氧化碲 近红外光阻隔 光电建筑集成 

分 类 号：TM914.4[电气工程—电力电子与电力传动]