Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8021298 | Materials Letters | 2013 | 4 Pages |
Abstract
We report zinc stannate (ZTO) nanoneedles obtained through hydrothermal synthesis as a promising photoanode for CdS/CdSe quantum dot sensitized solar cells. The cell based on ZTO/CdS/CdSe with copper sulfide counter electrode recorded the highest conversion efficiency of 3.13% under 1 sun illumination with improved short-circuit current density of 18.96Â mAÂ cmâ2 and open-circuit photovoltage of 0.613Â V which is several times higher than that of CdS sensitized ZTO cells. The high performance is attributed not only to large accumulation of photo-injected carriers but also to the slow process of recombination as one of the reasons for longer electron lifetime, which results in higher current density and open-circuit voltage, respectively.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
M. Mary Jaculine, S. Jerome Das, Hee-Je Kim, Byung Chul Kim, Kook-Hyun Yu, C. Justin Raj,