用于染料敏化太阳能电池应用的ZnO纳米片在FTO衬底上的直接生长。

Direct growth of ZnO nanosheets on FTO substrate for dye-sensitized solar cells applications.

作者信息

Umar Ahmad, Singh Pragya, Al-Ghamdi A A, Al-Heniti S

机构信息

Department of Chemistry, Faculty of Science, Advanced Materials and Nano-Engineering Laboratory (AMNEL), Najran University, P.O. Box 1988, Najran 11001, Kingdom of Saudi Arabia.

出版信息

J Nanosci Nanotechnol. 2010 Oct;10(10):6666-71. doi: 10.1166/jnn.2010.3294.

DOI:10.1166/jnn.2010.3294

PMID:21137779

Abstract

ZnO nanosheets were directly grown on fluorine-doped tin oxide (FTO) substrate via simple solution process at low temperature by using zinc chloride and hexamethylenetetramine (HMTA). The morphological characterizations by SEM and TEM confirmed that the deposited structures are nanosheets in which some are assembled in flower-shaped morphologies. The detailed structural investigations revealed that the deposited nanosheets are pure and crystalline ZnO and composed of Zn and O only. The obtained ZnO nanosheets on FTO substrate were used as a photoanode to fabricate the dye sensitized solar cells (DSSCs). The fabricated DSSCs exhibited an overall light-to-electricity conversion efficiency of 1.45%. A short-circuit current of 4.51 mA/cm2, open-circuit voltage of 0.610 V, and a fill factor of 0.53 were achieved from the fabricated ZnO nanosheets-based DSSCs.

摘要

通过使用氯化锌和六亚甲基四胺（HMTA），在低温下通过简单的溶液法将氧化锌纳米片直接生长在氟掺杂氧化锡（FTO）衬底上。扫描电子显微镜（SEM）和透射电子显微镜（TEM）的形态表征证实，沉积的结构是纳米片，其中一些组装成花状形态。详细的结构研究表明，沉积的纳米片是纯的结晶氧化锌，仅由锌和氧组成。在FTO衬底上获得的氧化锌纳米片用作光阳极来制造染料敏化太阳能电池（DSSC）。制造的DSSC表现出1.45%的整体光电转换效率。基于制造的氧化锌纳米片的DSSC实现了4.51 mA/cm²的短路电流、0.610 V的开路电压和0.53的填充因子。