A Silicon-Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability.
A Silicon-Singlet Fission Tandem Solar Cell Exceeding 100% External Quantum Efficiency with High Spectral Stability.
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DOI：
10.1021/acsenergylett.6b00678
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发表时间：
2017-02-10
影响因子：
22
通讯作者：
Ehrler B
中科院分区：
文献类型：
--
作者：
Pazos-Outón LM;Lee JM;Futscher MH;Kirch A;Tabachnyk M;Friend RH;Ehrler B
经过60年的研究，硅太阳能电池的效率已经接近理论极限，需要全新的方法来进一步提高效率。串联系统的使用将该理论功率转换效率极限从34%提高到45%。我们提出了有利的光谱稳定性使用电压匹配的串联太阳能电池相对于传统的串联连接的同行和实验演示如何单重态裂变可以用来产生简单的电压匹配的串联。我们的单重态裂变硅并五苯串联太阳能电池显示出有效的光电流添加。这使得串联系统受益于载流子倍增，并在并五苯的主吸收峰处产生超过100%的外量子效率。
After 60 years of research, silicon solar cell efficiency saturated close to the theoretical limit, and radically new approaches are needed to further improve the efficiency. The use of tandem systems raises this theoretical power conversion efficiency limit from 34% to 45%. We present the advantageous spectral stability of using voltage-matched tandem solar cells with respect to their traditional series-connected counterparts and experimentally demonstrate how singlet fission can be used to produce simple voltage-matched tandems. Our singlet fission silicon–pentacene tandem solar cell shows efficient photocurrent addition. This allows the tandem system to benefit from carrier multiplication and to produce an external quantum efficiency exceeding 100% at the main absorption peak of pentacene.