L-Alanine capping of ZnO nanorods: increased carrier concentration in ZnO/CuI heterojunction diode. Issue 10 (31st January 2018)

• Record Type: Journal Article
• Authors: Indubala, E.; Dhanasekar, M.; Sudha, V.; Malar, E. J. Padma; Divya, P.; Sherine, Jositta; Rajagopal, Revathy; Bhat, S. Venkataprasad; Harinipriya, S.
• Is Part Of: RSC advances. Volume 8:Issue 10(2018)
• Page Start: 5350
• Page End: 5361
• Publication Date: 2018-01-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra12385j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : ZnO nanorods were capped with a simple amino acid, viz., l -Alanine to increase the carrier concentration and improve the performance of ZnO/CuI heterojunction diodes. Abstract : ZnO nanorods were capped with a simple amino acid, viz., l -alanine to increase the carrier concentration and improve the performance of ZnO/CuI heterojunction diodes. The effect ofl -alanine capping on the morphology, structural, optical, electrochemical and electrical properties of ZnO nanorods had been studied in detail. The stable structure with two equally strong Zn–O coordinate bonds predicted by density functional theory was in agreement with the experimental results of FTIR spectroscopy. Due to the presence of electron-releasing (+I effect) moieties inl -Alanine, the carrier concentration of capped ZnO nanorods was two orders of magnitude higher and the ZnO/CuI heterojunction device showed more than a two-fold increase in the photovoltaic power conversion efficiency.