Improvement of spectral response by co-sensitizers for high efficiency dye-sensitized solar cells
作者:Shufang Zhang、Ashraful Islam、Xudong Yang、Chuanjiang Qin、Kun Zhang、Youhei Numata、Han Chen、Liyuan Han
DOI:10.1039/c3ta01043k
日期:——
Simple donor–π–acceptor organic dyes, denoted as HC3, HC4, and HC5, were synthesized as co-sensitizers for black dye based dye-sensitized solar cells. By tuning the electron-donating moieties and side alkyl chain lengths of the co-sensitizers, the spectral photoresponse was greatly enhanced from the UV to the entire visible region. The short circuit current density was significantly improved by 8.5% in the BD + HC5 cell with respect to the cell with BD only, and consequently a high efficiency of 11.6% was achieved.
简单的供体-π-受体有机染料HC3、HC4和HC5被合成作为黑染料基染料敏化太阳能电池的共敏化剂。通过调节共敏化剂的电子供体部分和侧烷基链长度,光谱光响应从紫外区域到整个可见光区域得到了极大增强。与只使用黑染料的电池相比,BD + HC5电池的短路电流密度显著提高了8.5%,因此获得了11.6%的高效率。