一种在用于纤维染料敏化太阳能电池的各种金属丝上制备锐钛矿型TiO₂树状纳米阵列的通用方法。

A general method for preparing anatase TiO₂ treelike-nanoarrays on various metal wires for fiber dye-sensitized solar cells.

作者信息

Chu Liang, Li Luying, Su Jun, Tu Fanfan, Liu Nishuang, Gao Yihua

机构信息

Center for Nanoscale Characterization and Devices (CNCD), Wuhan National Laboratory for Optoelectronics (WNLO)-School of Physics, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan 430074, P. R. China.

出版信息

Sci Rep. 2014 Mar 20;4:4420. doi: 10.1038/srep04420.

Anatase TiO2 tree-like nanoarrays were prepared on various metal wires (Ti, W, Ni, etc.) through one-step facile hydrothermal reaction. The anatase TiO2 tree-like nanoarrays consist of long TiO2 nanowire trunks with direct charge transport channels, and a large number of short TiO2 nanorod branches with large surface areas. Fiber dye-sensitized solar cells (FDSSCs) based on the anatase TiO2 tree-like nanoarrays deposited on Ti wires can achieve outstanding power conversion efficiency (PCE) of 6.32%, while FDSSCs on W wires have lower PCE of 3.24% due to the formation of WO3 layer, which might enhance recombination of charges. When the substrate is changed to a Nicole oxide wire, a novel p-n heterojunction can be obtained. This universal method is simple, facile, and low cost for preparing anatase TiO2 treelike-nanoarrays on various metal wires, which may find potential applications in fabrication of optoelectronic devices.

通过一步简便的水热反应，在各种金属丝（钛、钨、镍等）上制备了锐钛矿型二氧化钛树状纳米阵列。锐钛矿型二氧化钛树状纳米阵列由具有直接电荷传输通道的长二氧化钛纳米线主干和大量具有大表面积的短二氧化钛纳米棒分支组成。基于沉积在钛丝上的锐钛矿型二氧化钛树状纳米阵列的纤维染料敏化太阳能电池（FDSSCs）可实现6.32%的出色功率转换效率（PCE），而钨丝上的FDSSCs由于形成了WO3层，功率转换效率较低，为3.24%，这可能会增强电荷复合。当将基板换成氧化镍丝时，可以获得一种新型的p-n异质结。这种通用方法简单、便捷且成本低，可用于在各种金属丝上制备锐钛矿型二氧化钛树状纳米阵列，这可能在光电器件制造中找到潜在应用。