화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.73, 260-267, May, 2019
DOI10.1016/j.jiec.2019.01.036  Export Citation
Enhancement of solar cell performance through the formation of a surface dipole on polyacrylonitrile-treated TiO2 photoelectrodes
Gun Wook Baek, Young-Jin Kim1, Kyung-Hye Jung, and Yoon Soo Han†
  • School of Advanced Materials and Chemical Engineering, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
  • 1Department of Biomedical Engineering, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
E-mail:
Polyacrylonitrile (PAN) was adsorbed onto the TiO2 surface, and the resulting photoelectrodes were applied in dye-sensitized solar cells (DSSCs). The DSSC with the PAN-modified TiO2 showed an increase in its short-circuit current (Jsc) and a decrease in its open-circuit voltage (Voc), resulting in a 17% enhancement of its photovoltaic performance when compared to the reference cell. By incorporating PAN onto the surface of the TiO2, a surface dipole was formed, which induced a conduction band edge shift of the TiO2 in a positive direction. This shift led to a considerable improvement in the electron injection efficiency, and hence the Jsc.
Keywords:Polyacrylonitrile;Dye-sensitized solar cell;Surface dipole;Conduction band edge shift;Electron injection efficiency
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