Yu Jiefeng, Wang Dan, Huang Yining, Fan Xing, Tang Xin, Gao Cong, Li Jianlong, Zou Dechun, Wu Kai
BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Nanoscale Res Lett. 2011 Jan 18;6(1):94. doi: 10.1186/1556-276X-6-94.
A versatile anodization method was reported to anodize Ti wires into cylindrical core-shell-like and thermally crystallized TiO2 nanotube (TNT) arrays that can be directly used as the photoanodes for semi- and all-solid fiber-type dye-sensitized solar cells (F-DSSC). Both F-DSSCs showed higher power conversion efficiencies than or competitive to those of previously reported counterparts fabricated by depositing TiO2 particles onto flexible substrates. The substantial enhancement is presumably attributed to the reduction of grain boundaries and defects in the prepared TNT anodes, which may suppress the recombination of the generated electrons and holes, and accordingly lead to more efficient carrier-transfer channels.
据报道，一种通用的阳极氧化方法可将钛丝阳极氧化成圆柱状核壳结构且热结晶的二氧化钛纳米管（TNT）阵列，该阵列可直接用作半固态和全固态纤维型染料敏化太阳能电池（F-DSSC）的光阳极。这两种F-DSSC的功率转换效率均高于先前报道的通过在柔性基板上沉积二氧化钛颗粒制备的同类电池，或与之相当。这种显著的提高可能归因于所制备的TNT阳极中晶界和缺陷的减少，这可能抑制了所产生的电子和空穴的复合，从而导致更有效的载流子传输通道。
