Photoelectrochemical performance and carrier lifetime of electrodes based on MWCNT-templated TiO2 nanoribbons

Materials for Renewable and Sustainable Energy

J. C. Calva-Yáñez¹  M. Solís de la Fuente²  M. E. Rincón²  M. Ramírez-Vargas² 

[1] CONACyT-Centro de Graduados e Investigación en Química, Instituto Tecnológico de Tijuana;Instituto de Energías Renovables, Universidad Nacional Autónoma de México;

关键词: Electron lifetime;    C-doped TiO2;    Photon to current efficiency;   

DOI  :  10.1007/s40243-018-0126-8

来源: DOAJ

【 摘 要 】

Abstract Electron lifetime and photoelectrochemical performance of carbon-doped TiO2 electrodes are presented. Thin films of random disposed ribbon-like structures of C-doped TiO2 were applied onto FTO substrates using spray and dip-coating techniques. The fabricated electrodes show photocurrent enhancement 20 times greater than compact TiO2 electrode, and electron lifetimes 2 orders of magnitude lower than compact TiO2 films. Enhancement in photocurrent suggests a beneficial role of C-doping which compensates the transport properties expected to deteriorate in disordered and thicker architectures. Due to its large surface area, C-doped TiO2 electrodes can be used as matrix for the deposition of QD sensitizers for photovoltaic applications or as photoanode for photocatalytic applications. Still optimization on film thickness and passivation strategies must be implemented to increase the carrier lifetime.

【 授权许可】

Unknown