4.8 Article

Laser-Induced Control of TiO2 Porosity for Enhanced Photovoltaic Behavior

Journal

ADVANCED MATERIALS
Volume 23, Issue 34, Pages 3974-+

Publisher

WILEY-BLACKWELL
DOI: 10.1002/adma.201101837

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Funding

  1. Korea Institute of Energy Technology Evaluation and Planning (KETEP)
  2. Korea government Ministry of Knowledge Economy [20103020010080]
  3. Korea Evaluation Institute of Industrial Technology (KEIT) [20103020010080] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Porosity values between 0.12 and 0.40 are achieved in a controllable way for TiO2 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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