Hybrid Perovskite-Organic Flexible Tandem Solar Cell Enabling Highly Efficient Electrocatalysis Overall Water Splitting

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Jie Zhang
  • Ka Chun Lee
  • Hang Lei
  • Francis Lin
  • Zilong Wang

Detail(s)

Original languageEnglish
Article number2000361
Journal / PublicationAdvanced Energy Materials
Volume10
Issue number18
Online published23 Mar 2020
Publication statusPublished - 12 May 2020

Abstract

Perovskite-organic tandem solar cells are attracting more attention due to their potential for highly efficient and flexible photovoltaic device. In this work, efficient perovskite-organic monolithic tandem solar cells integrating the wide bandgap perovskite (1.74 eV) and low bandgap organic active PBDB-T:SN6IC-4F (1.30 eV) layer, which serve as the top and bottom subcell, respectively, are developed. The resulting perovskite-organic tandem solar cells with passivated wide-bandgap perovskite show a remarkable power conversion efficiency (PCE) of 15.13%, with an open-circuit voltage (Voc) of 1.85 V, a short-circuit photocurrent (Jsc) of 11.52 mA cm−2, and a fill factor (FF) of 70.98%. Thanks to the advantages of low temperature fabrication processes and the flexibility properties of the device, a flexible tandem solar cell which obtain a PCE of 13.61%, with Voc of 1.80 V, Jsc of 11.07 mA cm−2, and FF of 68.31% is fabricated. Moreover, to demonstrate the achieved high Voc in the tandem solar cells for potential applications, a photovoltaic (PV)-driven electrolysis system combing the tandem solar cell and water splitting electrocatalysis is assembled. The integrated device demonstrates a solar-to-hydrogen efficiency of 12.30% and 11.21% for rigid, and flexible perovskite-organic tandem solar cell based PV-driven electrolysis systems, respectively.

Research Area(s)

  • electrocatalysis, flexible tandem photovoltaics, overall water splitting, perovskite-organic solar cells

Citation Format(s)

Hybrid Perovskite-Organic Flexible Tandem Solar Cell Enabling Highly Efficient Electrocatalysis Overall Water Splitting. / Li, Zhen; Wu, Shengfan; Zhang, Jie; Lee, Ka Chun; Lei, Hang; Lin, Francis; Wang, Zilong; Zhu, Zonglong; Jen, Alex K. Y.

In: Advanced Energy Materials, Vol. 10, No. 18, 2000361, 12.05.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal