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Optoelectronic reciprocity in hot carrier solar cells with ideal energy selective contacts
Progress in Photovoltaics ( IF 8.0 ) Pub Date : 2021-01-10 , DOI: 10.1002/pip.3386 Andreas Pusch 1 , Milos Dubajic 1 , Michael P. Nielsen 1 , Gavin J. Conibeer 1 , Stephen P. Bremner 1 , Nicholas J. Ekins‐Daukes 1
Progress in Photovoltaics ( IF 8.0 ) Pub Date : 2021-01-10 , DOI: 10.1002/pip.3386 Andreas Pusch 1 , Milos Dubajic 1 , Michael P. Nielsen 1 , Gavin J. Conibeer 1 , Stephen P. Bremner 1 , Nicholas J. Ekins‐Daukes 1
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Hot carrier solar cells promise theoretical power conversion efficiencies far beyond the single junction limit. However, practical implementations of hot carrier solar cells have lagged far behind those theoretical predictions. Reciprocity relations for electroluminescence from conventional single junction solar cells have been extremely helpful in driving their efficiency ever closer to the theoretical limits. In this work, we discuss how the signatures of a functioning hot carrier device should manifest experimentally when driven in reverse, that is, in electroluminescent mode. Hot carrier properties lead to deviations of the dark I–V from the Shockley diode equation that is typical for conventional single junction solar cells. These deviations are directly linked to an increase in temperature of the carriers and therefore the temperature measured from electroluminescence spectra. We also elucidate how the behaviour of hot carrier solar cells in the dark depends on whether Auger processes play a significant role, revealing a stark contrast between the regime of negligible Auger recombination (carrier conservation model) and dominant Auger recombination (impact ionisation model) for hot carrier solar cells.
中文翻译：
具有理想能量选择触点的热载太阳能电池中的光电互易性
热载太阳能电池有望在理论上将功率转换效率远远超过单结极限。但是，热载流子太阳能电池的实际实现远远落后于那些理论预测。常规单结太阳能电池的电致发光互易关系在将其效率逼近理论极限方面一直非常有帮助。在这项工作中，我们讨论了当反向驱动（即以电致发光模式）驱动时，运行中的热载流子设备的签名应如何通过实验表现出来。热载流子特性导致暗I–V与传统单结太阳能电池典型的Shockley二极管方程式产生偏差。这些偏差与载体温度的升高直接相关，因此与从电致发光光谱测量的温度直接相关。我们还阐明了在黑暗中热载流子太阳能电池的行为如何取决于俄歇过程是否起重要作用，揭示了可忽略的俄歇复合（载流子守恒模型）和占优势的俄歇复合（冲击电离模型）之间的鲜明对比。热载体太阳能电池。
更新日期：2021-03-10
中文翻译：
具有理想能量选择触点的热载太阳能电池中的光电互易性
热载太阳能电池有望在理论上将功率转换效率远远超过单结极限。但是，热载流子太阳能电池的实际实现远远落后于那些理论预测。常规单结太阳能电池的电致发光互易关系在将其效率逼近理论极限方面一直非常有帮助。在这项工作中，我们讨论了当反向驱动（即以电致发光模式）驱动时，运行中的热载流子设备的签名应如何通过实验表现出来。热载流子特性导致暗I–V与传统单结太阳能电池典型的Shockley二极管方程式产生偏差。这些偏差与载体温度的升高直接相关，因此与从电致发光光谱测量的温度直接相关。我们还阐明了在黑暗中热载流子太阳能电池的行为如何取决于俄歇过程是否起重要作用，揭示了可忽略的俄歇复合（载流子守恒模型）和占优势的俄歇复合（冲击电离模型）之间的鲜明对比。热载体太阳能电池。
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