Laser-induced control of TiO 2 porosity for enhanced photovoltaic behavior

Junghwan Yoon; Minhea Jin; Myeongkyu Lee

doi:10.1002/adma.201101837

Laser-induced control of TiO ₂ porosity for enhanced photovoltaic behavior

Junghwan Yoon, Minhea Jin, Myeongkyu Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Porosity values between 0.12 and 0.40 are achieved in a controllable way for TiO ₂ electrodes in dye-sensitized solar cells by irradiation with a pulsed Nd:YAG laser at 1064 nm. Whereas the electron lifetime and diffusion distance increase with reduced porosity, the amount of adsorbed dyes remains almost constant. This greatly enhances the photocurrent density and energy conversion efficiency of the solar cell.

Original language	English
Pages (from-to)	3974-3978
Number of pages	5
Journal	Advanced Materials
Volume	23
Issue number	34
DOIs	https://doi.org/10.1002/adma.201101837
Publication status	Published - 2011 Sept 8

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/adma.201101837

Cite this

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abstract = "Porosity values between 0.12 and 0.40 are achieved in a controllable way for TiO 2 electrodes in dye-sensitized solar cells by irradiation with a pulsed Nd:YAG laser at 1064 nm. Whereas the electron lifetime and diffusion distance increase with reduced porosity, the amount of adsorbed dyes remains almost constant. This greatly enhances the photocurrent density and energy conversion efficiency of the solar cell.",

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