喷雾沉积的硫化铜锌锡（Cu2ZnSnS4）薄膜作为染料敏化太阳能电池的对电极。

Spray deposited copper zinc tin sulphide (Cu2ZnSnS4) film as a counter electrode in dye sensitized solar cells.

作者信息

Swami Sanjay Kumar, Chaturvedi Neha, Kumar Anuj, Chander Nikhil, Dutta Viresh, Kumar D Kishore, Ivaturi A, Senthilarasu S, Upadhyaya Hari M

机构信息

Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi-110016, India.

出版信息

Phys Chem Chem Phys. 2014 Nov 21;16(43):23993-9. doi: 10.1039/c4cp03312d. Epub 2014 Oct 6.

DOI:10.1039/c4cp03312d

PMID:25286339

Abstract

Stoichiometric thin films of Cu2ZnSnS4 (CZTS) were deposited by the spray technique on a FTO coated glass substrate, with post-annealing in a H2S environment to improve the film properties. CZTS films were used as a counter electrode (CE) in Dye-Sensitized Solar Cells (DSCs) with N719 dye and an iodine electrolyte. The DSC of 0.25 cm(2) area using a CE of CZTS film annealed in a H2S environment under AM 1.5G illumination (100 mW cm(-2)) exhibited a short circuit current density (JSC) = 18.63 mA cm(-2), an open circuit voltage (VOC) = 0.65 V and a fill factor (FF) = 0.53, resulting in an overall power conversion efficiency (PCE) = 6.4%. While the DSC using as deposited CZTS film as a CE showed the PCE = 3.7% with JSC = 13.38 mA cm(-2), VOC = 0.57 V and FF = 0.48. Thus, the spray deposited CZTS films can play an important role as a CE in the large area DSC fabrication.

摘要

通过喷雾技术将化学计量比的Cu2ZnSnS4（CZTS）薄膜沉积在涂有FTO的玻璃基板上，并在H2S环境中进行后退火以改善薄膜性能。CZTS薄膜用作染料敏化太阳能电池（DSC）中的对电极（CE），其中使用N719染料和碘电解质。在AM 1.5G光照（100 mW cm(-2)）下，使用在H2S环境中退火的CZTS薄膜作为CE的0.25 cm(2)面积的DSC表现出短路电流密度（JSC）= 18.63 mA cm(-2)，开路电压（VOC）= 0.65 V，填充因子（FF）= 0.53，总功率转换效率（PCE）= 6.4%。而使用沉积态CZTS薄膜作为CE的DSC的PCE = 3.7%，JSC = 13.38 mA cm(-2)，VOC = 0.57 V，FF = 0.48。因此，喷雾沉积的CZTS薄膜在大面积DSC制造中作为CE可以发挥重要作用。