Impacts of high-electroactive-surface-area buckypaper counter electrodes on the photovoltaic performance of dye-sensitized solar cells. (12th August 2015)

• Record Type: Journal Article
• Authors: Cheng, Cheng-En; Lin, Yu-Chang; Tsai, Shang-Yi; Lin, Zheng-Kun; Lee, Ping-Chen; Miao, Hsin-Yuan; Chang, Chen-Shiung; Chien, Forest Shih-Sen
• Is Part Of: Journal of physics. Volume 48:Number 35(2015)
• Publication Date: 2015-08-12
• Subjects: dye-sensitized solar cell -- buckypaper -- Pt-free counter electrode -- cyclic voltammetry -- electrochemical impedance spectroscopy; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/48/35/355107
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this paper we study the photovoltaic performance of dye-sensitized solar cells (DSCs) with high-electroactive-surface-area buckypaper (BP) counter electrodes (CEs). BP is made of entangled multi-walled carbon nanotubes and has a high electroactive surface area, which is effectively 11.5 times higher than that of Pt. The high surface area of BP causes a high reduction rate at the CEs and suppresses the charge recombination at the anodes. Accordingly, the open-circuit voltage, the filling factor, and the power conversion efficiency of DSCs with BP CEs are enhanced, and these photovoltaic parameters exhibit a better trend with the increase of solar power compared with conventional DSCs with Pt CEs.