Trap Assisted Persistent Photo-Conductivity in Solution-Processed CuO Thin Film

Autor:	Jitesh Agrawal, Vipul Singh, Akash Tripathi, Tejendra Dixit
Rok vydání:	2020
Předmět:	Materials science Nir light business.industry Conductivity Condensed Matter Physics Photo conductivity Atomic and Molecular Physics and Optics Solution processed Wavelength Semiconductor Light source Optoelectronics Electrical and Electronic Engineering Thin film business
Zdroj:	IEEE Journal of Quantum Electronics. 56:1-5
ISSN:	1558-1713 0018-9197
DOI:	10.1109/jqe.2019.2952385
Popis:	Optically induced meta-stable states in the semiconductor lattice temporarily change the conductivity which leads to a phenomenon called persistent photo-conductivity (PPC). We report a PPC effect with long retention time of more than 90 h in solution-processed highly transparent CuO thin film. A 254 nm wavelength light source was used to `set' and thermal annealing at 50°C for 10 minutes and NIR illumination was used to reset PPC effect. Activated trap states without any stimulus which are responsible for PPC effect in CuO thin film has, been investigated by performing temperature-dependent I-V characterization. These trapped charges are released either on heating or illumination with NIR light source. Such a long-enduring PPC achieved in low-cost transparent CuO thin film could pave the way for further study of the feasibility of optically defined, transparent electronics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::86c0d27b9bc4ae2b75b39cc58f3e5bdc https://doi.org/10.1109/jqe.2019.2952385 Zobrazit plný text záznamu