The Potential of Singlet Fission Photon Multipliers as an Alternative to Silicon-Based Tandem Solar Cells.
The Potential of Singlet Fission Photon Multipliers as an Alternative to Silicon-Based Tandem Solar Cells.
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DOI：
10.1021/acsenergylett.8b01322
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发表时间：
2018-10-12
影响因子：
22
通讯作者：
Ehrler B
中科院分区：
文献类型：
--
作者：
Futscher MH;Rao A;Ehrler B
单线态裂变是有机半导体中的激子倍增过程，其将一个单线态激子转化为两个三线态激子，是减少传统太阳能电池中热化损失的有希望的方法。收集三重态激子的一种方法是将它们的能量转移到量子点中，然后量子点将光子发射到底层的太阳能电池中。我们模拟了这样的单重态裂变光子倍增器与硅基电池相结合的性能潜力，并将其与硅基串联太阳能电池进行比较。我们计算的影响，各种损失机制的性能潜力，在现实世界的操作条件下，使用各种不同的效率的硅基电池。我们发现，光子倍增器是更稳定的对太阳光谱的变化比两端串联太阳能电池。我们还发现，随着硅基电池的效率增加，光子倍增器的效率以高于叠层太阳能电池的效率的速率增加。对于目前创纪录的硅太阳能电池，光子倍增器有可能将效率提高4.2%。
Singlet fission, an exciton multiplication process in organic semiconductors that converts one singlet exciton into two triplet excitons, is a promising way to reduce thermalization losses in conventional solar cells. One way to harvest triplet excitons is to transfer their energy into quantum dots, which then emit photons into an underlying solar cell. We simulate the performance potential of such a singlet fission photon multiplier combined with a silicon base cell and compare it to a silicon-based tandem solar cell. We calculate the influence of various loss mechanisms on the performance potential under real-world operation conditions using a variety of silicon base cells with different efficiencies. We find that the photon multiplier is more stable against changes in the solar spectrum than two-terminal tandem solar cells. We furthermore find that, as the efficiency of the silicon base cell increases, the efficiency of the photon multiplier increases at a rate higher than that of the tandem solar cell. For current record silicon solar cells, the photon multiplier has the potential to increase the efficiency by up to 4.2% absolute.
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影响因子：
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作者：
Futscher MH;Ehrler B
通讯作者：
Ehrler B