APPLICATION OF HIGHLY ORDERED ARRAYS OF TITANIA-COATED TITANIUM NANORODS IN ENHANCED PHOTOELECTRO CHEMICAL CELLS

摘要：

This paper reports on the synthesis and application of ordered arrays of titania-coated titanium nanorods in enhanced photoelectrochemical cells. Ordered arrays of titania-coated titanium nanorods of ~20 nm external diameter and ~5 microns in length were fabricated by sol-gel and sedimentation processes using in-house prepared anodic alumina templates and applied in dye-sensitized photoelectrochemical cells. Overall photoconversion efficiency of 9.7％ was achieved with Ru-bipyridine dye, N719, and iodolyte liquid electrolyte. This is remarkable performance for electrodes only ~5 microns thick is attributed to considerable reduction in trap states in the conduction band of the titania and thus reduced band-bending effects and to reduced electron diffusion distance and time constant and thus improved electron collection efficiency.

作者: Nicholas N.Bwana

作者单位: Department of Engineering Science, University of Oxford, Oxford OX1 3PJ

会议类型: 国际会议

会议名称: 2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-09-18（万方平台首次上网日期，不代表论文的发表时间）