Graphene-nanoparticle incorporated responsivity tuning of p-CuO/n-Si-based heterojunction photodetectors

Bulletin of Materials Science

GOUTAM K DALAPATI^3¹  JENIFAR SULTANA^1²  ANANNYA BHATTACHARYA^2³  ANUPAM KARMAKAR^2⁴ 

[1] Innovis #08-03, Singapore 138634, Singapore^3;Centre for Research in Nanoscience and Nanotechnology (CRNN), Kolkata 700098, India^1;Department of Electronic Science, University of Calcutta, Kolkata 700009, India^2;Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way

关键词: Graphene-nanoparticle;    CuO;    CBD;    responsivity;    photodetector.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The current work focusses on investigating the appropriate wt% of graphene-nanoparticles to be incorporated into the CuO film as a dopant for enhancing its optoelectronic properties. CuO and graphene-nanoparticle-incorporatedCuO films (CG) are grown by employing a chemical bath deposition (CBD) method. Graphene-nanoparticles have been incorporated at different wt% (1, 5 and 10%) with respect to the metal salt (CuCl$_2$·${}^2$H$_2$O), and a comparative study has been performed on the systematic change of the film morphology, chemical composition, oxidation states, crystallite structures and photo-sensing effects. It has been found that the morphology and the structural properties of CBD grown CuO films have been tuned by the incorporation of graphene-nanoparticles. The results show a significant enhancement in the optoelectronic properties of CG1 (1%) and CG5 (5%) films. The optical properties of the as-grown films have been observed to be modified by graphene-nanoparticle incorporation. Moreover, the electronic and optoelectroniccharacteristics of the fabricated p-CuO/n-Si heterojunctions have also been investigated. The enhancement of the optoelectronic properties of the CG5 sample as compared to other grown films in the present study suggests thatthe responsivity and photodetecting properties of the CBD grown CuO films can be improved by graphene-nanoparticle incorporation.

【 授权许可】

CC BY