title: Bifacial dye-sensitized solar cells: a strategy to enhance overall efficiency based on transparent polyaniline electrode.
abstract: Dye-sensitized solar cell (DSSC) is a promising solution to global energy and environmental problems because of its clean, low-cost, high efficiency, good durability, and easy fabrication. However, enhancing the efficiency of the DSSC still is an important issue. Here we devise a bifacial DSSC based on a transparent polyaniline (PANI) counter electrode (CE). Owing to the sunlight irradiation simultaneously from the front and the rear sides, more dye molecules are excited and more carriers are generated, which results in the enhancement of short-circuit current density and therefore overall conversion efficiency. The photoelectric properties of PANI can be improved by modifying with 4-aminothiophenol (4-ATP). The bifacial DSSC with 4-ATP/PANI CE achieves a light-to-electric energy conversion efficiency of 8.35%, which is increased by ~24.6% compared to the DSSC irradiated from the front only. This new concept along with promising results provides a new approach for enhancing the photovoltaic performances of solar cells.
authors: Institute of Materials Physical Chemistry, Huaqiao University, 362021 Quanzhou, P. R. China.
authors: Jihuai
authors: J
authors: Wu
authors: Institute of Materials Physical Chemistry, Huaqiao University, 362021 Quanzhou, P. R. China.
authors: Yan
authors: Y
authors: Li
authors: Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, P. R. China.
authors: Qunwei
authors: Q
authors: Tang
authors: Institute of Materials Physical Chemistry, Huaqiao University, 362021 Quanzhou, P. R. China.
authors: Gentian
authors: G
authors: Yue
authors: Institute of Materials Physical Chemistry, Huaqiao University, 362021 Quanzhou, P. R. China.
authors: Jianming
authors: J
authors: Lin
authors: Institute of Materials Physical Chemistry, Huaqiao University, 362021 Quanzhou, P. R. China.
authors: Miaoliang
authors: M
authors: Huang
authors: Departamento de Física, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal, Centro de Física, Universidade do Minho, 4800-058 Guimarães, Portugal.
authors: Lijian
authors: L
authors: Meng