Work

Enhanced Efficiency of Nanoporous-layer-covered TiO2 NanotubeArrays for Front Illuminated Dye-sensitized Solar Cells

Year: 2016

Type: article

Abstract: Nanoporous-layer-covered TiO 2 nanotube arrays (Type II TNTs) were fabricated by two-step electrochemical anodization.For comparison, conventional TiO 2 nanotube arrays (Type I TNTs) were also prepared by one-step electrochemical anodization.Types I and II TNTs were detached by selective etching and then transferred successfully to a transparent F-doped SnO 2 (FTO) substrate by a sol-gel process.Both FTO/Types I and II TNTs allowed front side illumination to exhibit incident photon-to-current efficiencies (IPCEs) in the long wavelength region of 300 to 750 nm without the absorption of light by the iodine-containing electrolyte.The Type II TNT exhibited longer electron lifetime and faster charge transfer than the Type I TNT because of its relatively fewer defect states.These beneficial effects lead to a high overall energy conversion efficiency (5.32 %) of the resulting dye-sensitized solar cell.

Source: Journal of Electrochemical Science and Technology

DOI: 10.33961/jecst.2016.7.1.52

Authors: Soon-Hyung Kang, Soo-Yong Lee, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Kwang-Soon Ahn

Institutions: Chonnam National University, Yeungnam University, Jeonbuk National University

Language: English

Topic: TiO2 Photocatalysis and Solar Cells

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Funders: National Research Foundation, National Research Foundation of Korea