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Seo MS, Jeong I, Park JS, et al. Vertically aligned nanostructured TiO2 photoelectrodes for high efficiency perovskite solar cells via a block copolymer template approach. Nanoscale. 2016;8(22):11472-9doi: 10.1039/c6nr01010e.
Seo, M. S., Jeong, I., Park, J. S., Lee, J., Han, I. K., Lee, W. I., Son, H. J., Sohn, B. H., & Ko, M. J. (2016). Vertically aligned nanostructured TiO2 photoelectrodes for high efficiency perovskite solar cells via a block copolymer template approach. Nanoscale, 8(22), 11472-9. https://doi.org/10.1039/c6nr01010e
Seo, Myung-Seok, et al. "Vertically aligned nanostructured TiO2 photoelectrodes for high efficiency perovskite solar cells via a block copolymer template approach." Nanoscale vol. 8,22 (2016): 11472-9. doi: https://doi.org/10.1039/c6nr01010e
Seo MS, Jeong I, Park JS, Lee J, Han IK, Lee WI, Son HJ, Sohn BH, Ko MJ. Vertically aligned nanostructured TiO2 photoelectrodes for high efficiency perovskite solar cells via a block copolymer template approach. Nanoscale. 2016 Jun 02;8(22):11472-9. doi: 10.1039/c6nr01010e. PMID: 27195519.
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Nanoscale. 2016 Jun 02;8(22):11472-9. doi: 10.1039/c6nr01010e.

Vertically aligned nanostructured TiO2 photoelectrodes for high efficiency perovskite solar cells via a block copolymer template approach.

Nanoscale

Myung-Seok Seo, Inyoung Jeong, Joon-Suh Park, Jinwoo Lee, Il Ki Han, Wan In Lee, Hae Jung Son, Byeong-Hyeok Sohn, Min Jae Ko

Affiliations

  1. Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea. [email protected] and Department of Chemistry, Seoul National University, Seoul 08826, Korea. [email protected].
  2. Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea. [email protected] and Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk 37673, Korea.
  3. Materials and Life Science Research Division, Nanophotonics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.
  4. Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk 37673, Korea.
  5. Department of Chemistry and Chemical Engineering, Inha University, Incheon 22201, Korea.
  6. Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea. [email protected].
  7. Department of Chemistry, Seoul National University, Seoul 08826, Korea. [email protected].
  8. Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea. [email protected] and KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea.

PMID: 27195519 DOI: 10.1039/c6nr01010e

Abstract

We fabricated perovskite solar cells with enhanced device efficiency based on vertically oriented TiO2 nanostructures using a nanoporous template of block copolymers (BCPs). The dimension and shape controllability of the nanopores of the BCP template allowed for the construction of one-dimensional (1-D) TiO2 nanorods and two-dimensional (2-D) TiO2 nanowalls. The TiO2 nanorod-based perovskite solar cells showed a more efficient charge separation and a lower charge recombination, leading to better performance compared to TiO2 nanowall-based solar cells. The best solar cells employing 1-D TiO2 nanorods showed an efficiency of 15.5% with VOC = 1.02 V, JSC = 20.0 mA cm(-2) and fill factor = 76.1%. Thus, TiO2 nanostructures fabricated from BCP nanotemplates could be applied to the preparation of electron transport layers for improving the efficiency of perovskite solar cells.

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