PtCoFe Nanowire Cathodes Boost Short-Circuit Currents of Ru(II)-Based Dye-Sensitized Solar Cells to a Power Conversion Efficiency of 12.29%

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Chin-Cheng (Paul) Chiang
  • Chang-Yu Hung
  • Shang-Wei Chou
  • Jing-Jong Shyue
  • Kum-Yi Cheng
  • Pei-Jen Chang
  • Ya-Yun Yang
  • Ching-Yen Lin
  • Ting Kuang Chang
  • Hung-Lung Chou
  • Pi-Tai Chou

Detail(s)

Original languageEnglish
Article number1703282
Journal / PublicationAdvanced Functional Materials
Volume28
Issue number3
Online published2 Nov 2017
Publication statusPublished - 17 Jan 2018
Externally publishedYes

Abstract

PtCoFe nanowires with different alloying compositions are chemically prepared and acted as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs) with Ru(II)-based dyes. Due to their superior I-3 reduction activity, PtCoFe nanowires with rich (111) facets enhance the performance of DSSCs. Hence, N719 DSSCs with PtCoFe nanowires, respectively, produce better power conversion efficiency (PCE) of 8.10% for Pt33Co24Fe43 nanowire, 8.33% for Pt74Co12Fe14 nanowire, and 9.26% for Pt49Co23Fe28 nanowire in comparison to the PCE of Pt CE (7.32%). Further, the PRT-22 DSSC with Pt49Co23Fe28 nanowire exhibits a maximum PCE of 12.29% with a certificated value of 12.0%, which surpass the previous PCE record of the DSSCs with Ru(II)-based dyes. The photovoltaic and electrochemical results reveal the composition-dependent activity along with a volcano-shaped trend in the I-/I-3 redox reaction. Theoretical work on the adsorption energies of I2 , the desorption energies of I-, and the corresponding absolute energy demonstrates that the I-3 reduction activity followed in the order of Pt49Co23Fe28(111) plane, Pt74Co12Fe14(111) plane, Pt33Co24Fe43(111) plane, proving Pt49Co23Fe28 nanowire to be a superior cathode material for DSSCs.

Research Area(s)

  • PtCoFe alloy nanowires, Ru(II)-based dyes, counter electrodes, dye-sensitized solar cells, triiodide reduction

Citation Format(s)

PtCoFe Nanowire Cathodes Boost Short-Circuit Currents of Ru(II)-Based Dye-Sensitized Solar Cells to a Power Conversion Efficiency of 12.29%. / Chiang, Chin-Cheng (Paul); Hung, Chang-Yu; Chou, Shang-Wei; Shyue, Jing-Jong; Cheng, Kum-Yi; Chang, Pei-Jen; Yang, Ya-Yun; Lin, Ching-Yen; Chang, Ting Kuang; Chi, Yun; Chou, Hung-Lung; Chou, Pi-Tai.

In: Advanced Functional Materials, Vol. 28, No. 3, 1703282, 17.01.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review