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Solution-Processed One-Dimensional ZnO@CdS Heterojunction toward Efficient Cu2ZnSnS4 Solar Cell with Inverted Structure.


ABSTRACT: Kesterite Cu2ZnSnS4 (CZTS) semiconductor has been demonstrated to be a promising alternative absorber in thin film solar cell in virtue of its earth-abundant, non-toxic element, suitable optical and electrical properties. Herein, a low-cost and non-toxic method that based on the thermal decomposition and reaction of metal-thiourea-oxygen sol-gel complexes to synthesize CZTS thin film was developed. The low-dimensional ZnO@CdS heterojunction nano-arrays coupling with the as-prepared CZTS thin film were employed to fabricate a novel solar cell with inverted structure. The vertically aligned nanowires (NWs) allow facilitating the charge carrier collection/separation/transfer with large interface areas. By optimizing the parameters including the annealing temperature of CZTS absorber, the thickness of CdS buffer layer and the morphology of ZnO NWs, an open-circuit voltage (VOC) as high as 589?mV was obtained by such solar cell with inverted structure. The all-solution-processed technic allows the realization of CZTS solar cell with extremely low cost.

SUBMITTER: Chen R 

PROVIDER: S-EPMC5062431 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature

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Solution-Processed One-Dimensional ZnO@CdS Heterojunction toward Efficient Cu<sub>2</sub>ZnSnS<sub>4</sub> Solar Cell with Inverted Structure.

Chen Rongrong R   Fan Jiandong J   Liu Chong C   Zhang Xing X   Shen Yanjiao Y   Mai Yaohua Y  

Scientific reports 20161013


Kesterite Cu<sub>2</sub>ZnSnS<sub>4</sub> (CZTS) semiconductor has been demonstrated to be a promising alternative absorber in thin film solar cell in virtue of its earth-abundant, non-toxic element, suitable optical and electrical properties. Herein, a low-cost and non-toxic method that based on the thermal decomposition and reaction of metal-thiourea-oxygen sol-gel complexes to synthesize CZTS thin film was developed. The low-dimensional ZnO@CdS heterojunction nano-arrays coupling with the as-  ...[more]

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