One-Dimensional Core/Shell Structured TiO2/ZnO Heterojunction for Improved Photoelectrochemical Performance

Bulletin of the Korean chemical society

In Ae Ji¹  Mi Jin Choi¹  Jung-Ho Lee¹  Min-Joon Park¹  Jin Ho Bang¹  Yong-Woo Lee¹  Jin-Young Jung¹ 

关键词: TiO2/ZnO heterojunction;    Photoelectrochemical water splitting;    Atomic layer deposition;    Semiconductor- sensitized solar cell;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

One-dimensional TiO2 array grown on optically transparent electrode holds a promise as a photoelectrode for photoelectrochemical water splitting; however, its crystal structure is rutile, imposing constraints on the potent use of this nanostructure. To address this issue, a heterojunction with type-II band alignment was fabricated using atomic layer deposition (ALD) technique. One-dimensional core/shell structured TiO2/ZnO heterojunction was superior to TiO2 in the photoelectrochemical water splitting because of better charge separation and more favorable Fermi level. The heterojunction also possesses better light scattering property, which turned out to be beneficial even for improving the photoelectrochemical performance of semiconductor-sensitized solar cell.

【 授权许可】

Unknown