Improved ultraviolet photodetector performances using solution-processed nitrogen-doped carbon quantum dots/ZnO hybrid thin films

Lavanya Thyda, Koppula Naresh, Joel K Joseph, S. Suneetha,C Esther Jeyanthi, P. Amaladass, C. Selvaraju,Kuppusamy Thangaraju

Thin Solid Films（2024）

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摘要

•Nitrogen-doped carbon quantum dots (NCQDs) have active surface energy states.•Spin-coated NCQDs/ZnO hybrid thin films exhibit higher transparency (>95%).•NCQDs show emission at 439 nm and also transfer energy to ZnO in hybrid thin films.•NCQDs absorb energy (365 nm) and transfer photogenerated charge carriers to ZnO.•NCQDs/ZnO ratio [%(w/v)] of 1.2 × 10–3 showed highest photodetector performances.

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关键词

Zinc oxide,Nitrogen doping,Carbon quantum dots,Spin-coating,Thin films,Ultraviolet photodetectors

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