Highly Efficient Utilization of High‐Energy Excitons in Multilayer WSe2 for Self‐Powered Ultraviolet Photodetector With Near‐Unity External Quantum Efficiency
Chuxin Yan,
Yuanzheng Li,
Rui Li
et al.
Abstract:High‐energy excitons in transition metal dichalcogenides (TMDs), resulting from intrinsic van Hove singularities in the density of states, demonstrate strong ultraviolet light absorption capacity and significant potential for the development of high‐performance ultraviolet photovoltaic devices. Nevertheless, only a limited fraction of carriers from high‐energy excitons can be effectively utilized due to unique parallel band structures and unfavorable recombination processes. To efficiently exploit the high‐ene… Show more
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