Improving the photovoltaic performance of co‐evaporated Cu 2 ZnSnS 4  thin‐film solar cells by incorporation of sodium from NaF layers | Zendy

Mise Takahiro | Zendy; Tajima Shin | Zendy; Fukano Tatsuo | Zendy; Higuchi Kazuo | Zendy; Washio Tsukasa | Zendy; Jimbo Kazuo | Zendy; Katagiri Hironori | Zendy

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Improving the photovoltaic performance of co‐evaporated Cu 2 ZnSnS 4 thin‐film solar cells by incorporation of sodium from NaF layers

Author(s) -

Mise Takahiro,

Tajima Shin,

Fukano Tatsuo,

Higuchi Kazuo,

Washio Tsukasa,

Jimbo Kazuo,

Katagiri Hironori

Publication year - 2016

Publication title -

progress in photovoltaics: research and applications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.286

H-Index - 131

eISSN - 1099-159X

pISSN - 1062-7995

DOI - 10.1002/pip.2745

Subject(s) - czts , materials science , layer (electronics) , solar cell , photovoltaic system , microstructure , thin film , sodium , optoelectronics , active layer , diode , chemical engineering , nanotechnology , metallurgy , thin film transistor , electrical engineering , engineering

We have investigated the influence of sodium (Na) on the properties of co‐evaporated Cu 2 ZnSnS 4 (CZTS) layer microstructures and solar cells. The photovoltaic performance and diode properties were improved by incorporating Na from NaF layers into the CZTS layers, while Na had a negligible effect on the microstructural properties of the layer. The best cell fabricated by using an optimal CZTS layer (Cu/(Zn + Sn) = 0.70, Zn/Sn = 1.8) yielded an active area efficiency of 5.23%. The analysis of device properties suggests that charge‐carrier recombination at CZTS/CdS interface is suppressed by intentional Na incorporation from NaF layers. Copyright © 2016 John Wiley & Sons, Ltd.

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