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首页> 外文期刊>RSC Advances >Cu2ZnSnS4 thin film solar cells with 5.8% conversion efficiency obtained by a facile spray pyrolysis technique
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Cu2ZnSnS4 thin film solar cells with 5.8% conversion efficiency obtained by a facile spray pyrolysis technique

机译：通过便捷的喷雾热解技术获得转换效率为5.8％的Cu2ZnSnS4薄膜太阳能电池

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摘要

An attempt was made to fabricate Cu2ZnSnS4 (CZTS) thin film absorber on a Mo-coated glass substrate by using facile spray pyrolysis deposition of a precursor film from an aqueous solution containing Cu(NO3)(2), Zn(NO3)(2), Sn(CH3SO3)(2) and thiourea. In order to obtain a stable solution for the spray pyrolysis deposition without formation of an SnO2 precipitate, the mixing order of source materials was found to be important. Annealing of the thus-obtained precursor film in sulfur vapor at temperatures ranging from 580 degrees C to 600 degrees C resulted in successful formation of homogeneous films composed of CZTS crystallites. Based on structural analyses of CZTS films having different Sn contents, an Sn-rich composition compared to its stoichiometric amount was found to be essential for efficient grain growth of the resulting CZTS films. A solar cell based on the Sn-rich CZTS film obtained by an optimum annealing condition exhibited maximum conversion efficiency of 5.8%.
机译：试图通过从包含Cu（NO3）（2），Zn（NO3）（2）的水溶液中进行前驱膜的快速喷雾热解沉积，在Mo涂层玻璃基板上制造Cu2ZnSnS4（CZTS）薄膜吸收剂。 ，Sn（CH3SO3）（2）和硫脲。为了获得用于喷雾热解沉积的稳定溶液而不形成SnO 2沉淀，发现原料的混合顺序很重要。如此获得的前体膜在硫蒸气中在580℃至600℃的温度范围内退火导致成功形成由CZTS微晶组成的均质膜。基于具有不同Sn含量的CZTS膜的结构分析，发现与化学计量比相比，富Sn的组成对于所得CZTS膜的有效晶粒生长至关重要。通过最佳退火条件获得的基于富含Sn的CZTS膜的太阳能电池表现出5.8％的最大转化效率。

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