开路电压
炼金术中的太阳
物理
凝聚态物理
幂律
电压
态密度
高斯分布
指数函数
材料科学
光电子学
量子力学
数学
统计
数学分析
作者
Maria Saladina,Christopher Wöpke,Clemens Göhler,Iván Ramírez,Olga Gerdes,Chao Liu,Ning Li,Thomas Heumueller,Christoph J. Brabec,Karsten Walzer,Martin Pfeiffer,Carsten Deibel
标识
DOI:10.1103/physrevlett.130.236403
摘要
The density of states (DOS) is fundamentally important for understanding physical processes in organic disordered semiconductors, yet hard to determine experimentally. We evaluated the DOS by considering recombination via tail states and using the temperature and open-circuit voltage ($V_\mathrm{oc}$) dependence of the ideality factor in organic solar cells. By performing Suns-$V_\mathrm{oc}$ measurements, we find that gaussian and exponential distributions describe the DOS only at a given quasi-Fermi level splitting. The DOS width increases linearly with the DOS depth, revealing the power-law DOS in these materials.
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