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Photonic sintering of ZnO nanosheet photoanode using flash white light combined with Deep-UV irradiation for Dye-sensitized solar cells

Title
Photonic sintering of ZnO nanosheet photoanode using flash white light combined with Deep-UV irradiation for Dye-sensitized solar cells
Author
Supriya A. Patil
Keywords
HIERARCHICAL STRUCTURES; ELECTRON LIFETIME; ROOM-TEMPERATURE; FABRICATION; NANOSTRUCTURES; EFFICIENCY; NANOCRYSTALLINE; PERFORMANCE; NANOTUBES; FILM
Issue Date
2017-02
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v. 7, no. 11, page. 6565-6573
Abstract
The present report details research work on the photonic sintering of ZnO nanosheets (ZnO NSs), which were synthesized via a solid-state synthesis method. The sintering was performed using flash white light (FWL) combined with deep UV irradiation (photonic sintering) under ambient conditions at ultra-high speed, which is a superior process over the conventional thermal-sintering process. Furthermore, the application of this method was demonstrated in dye-sensitized-solar cells (DSSCs), where a power conversion efficiency (PCE) of 2.9% was achieved when the photoanode was annealed using photonic sintering with a FWL of 20 J cm(-2) combined with deep UV irradiation of 30 mW cm(-2) irradiation power. This PCE is higher than that of the pristine ZnO NSs (PCE-1.5%) and of the thermally sintered ZnO NS photoanode (PCE = 2.0%). The superior performance of the dye cell with the photonic-sintered ZnO NSs is attributed to the better interconnection, higher effective electron diffusion coefficient (D-n), higher electron diffusion length (L-n) and a higher amount of dye loading than that of the pristine ZnO NS photoanode. The improved PCE suggests that the photonic-sintering method, as well as being extremely simple, is highly effective and enables a fast annealing for photoanodes in DSSCs and could be particularly beneficial for low-temperature-based solar cells.
URI
https://pubs.rsc.org/en/content/articlelanding/2017/RA/C6RA26815C#!divAbstracthttps://repository.hanyang.ac.kr/handle/20.500.11754/112706
ISSN
2046-2069
DOI
10.1039/c6ra26815c
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RESEARCH INSTITUTE[S](부설연구소) > ETC
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