title: Photovoltaic performance of TiO2 electrode adsorbed with gardenia yellow purified by nonionic polymeric sorbent in dye-sensitized solar cells.
abstract: To improve the photovoltaic conversion efficiency in dye-sensitized solar cells (DSSCs), TiO2 electrode adsorbed with gardenia yellow purified by nonionic polymeric sorbent was successfully formulated on nanoporous TiO2 surface. Adsorption and desorption properties of crude gardenia yellow solution on a macroporous resin, XAD-1600, were investigated to purify gardenia yellow because of its strong adsorption and desorption abilities as well as high selectivity. To this end, adsorption equilibrium and kinetic data were measured and fitted using adsorption isotherms and kinetic models. Adsorption and desorption breakthrough curves in a column packed with XAD-1600 resin was obtained to optimize the separation process of gardenia yellow. The photovoltaic performance of the photo-electrode adsorbed with the crude and purified gardenia yellow in DSSCs was compared from current-voltage measurements. The results showed that the photovoltaic conversion efficiency was highly dependent on how to separate and purify gardenia yellow as a photosensitizer.
authors.affiliation: Gyeongbuk Natural Color Industry Institute, Yeongcheon 770-060, Republic of Korea.
authors.forename: Oh Oun
authors.initials: OO
authors.lastname: Kwon
authors.affiliation: Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Republic of Korea.
authors.forename: Eui Jin
authors.initials: EJ
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Republic of Korea.
authors.forename: Jae Hyeok
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Environmental Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea.
authors.forename: Tae Young
authors.initials: TY
authors.lastname: Kim
authors.affiliation: The Research Institute of Advanced Engineering Technology, Chosun University, Gwangju 501-759, Republic of Korea.
authors.forename: Kyung Hee
authors.initials: KH
authors.lastname: Park
authors.affiliation: Gyeongbuk Natural Color Industry Institute, Yeongcheon 770-060, Republic of Korea.
authors.forename: Sang Yook
authors.initials: SY
authors.lastname: Kim
authors.affiliation: Gyeongbuk Natural Color Industry Institute, Yeongcheon 770-060, Republic of Korea.
authors.forename: Hwa Jin
authors.initials: HJ
authors.lastname: Suh
authors.affiliation: Gyeongbuk Natural Color Industry Institute, Yeongcheon 770-060, Republic of Korea.
authors.forename: Hyo Jung
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: Department of Chemical and Biochemical Engineering, Chosun University, Gwangju 501-759, Republic of Korea. Electronic address: jwlee@chosun.ac.kr.
authors.forename: Jae Wook
authors.initials: JW
authors.lastname: Lee
keywords: Adsorption; Dye-sensitized solar cell; Gardenia yellow; Nonionic polymeric sorbent; Photovoltaic performance