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Mengyu Chen, Hui Yu, Stephen V. Kershaw, Haihua Xu, Shuchi Gupta, Frederik Hetsch, Andrey L. Rogach and Ni Zhao Fast, Air-Stable Infrared Photodetectors based on Spray-Deposited Aqueous HgTe Quantum Dots Advanced Functional Materials 24

Version of Record online: 20 JUN 2013 | DOI: 10.1002/adfm.201301006

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A single layer, aqueous HgTe quantum dot (QD)-based photoconductor with fast temporal response is demonstrated. The device is fabricated using a simple spray-coating process and shows excellent stability in ambient conditions. The carrier mobility, the energy levels and carrier lifetimes associated with the trap states of the QDs are identified and correlated with the origin of the fast time response.

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