Unique Curve for the Radiative Photovoltage Deficit Caused by the Urbach Tail
نویسندگان
چکیده
The photovoltage Voc of high-performance solar cells such as GaAs and metal halide perovskites is affected by the exponential Urbach tail in absorption spectrum, with an energy parameter EU. It has been observed that increasing decreases maximum can be achieved. On basis detailed balance reciprocity emission, we present a calculation shows voltage loss due to obeys universal relation ΔVocrad = (kBT/q) ln(1 – EU/kBT) for EU < kBT, independently bandgap.
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ژورنال
عنوان ژورنال: Journal of Physical Chemistry Letters
سال: 2021
ISSN: ['1948-7185']
DOI: https://doi.org/10.1021/acs.jpclett.1c01935