Vertical 2D/3D Heterojunction of Tin Perovskites for Highly Efficient HTM-Free Perovskite Solar Cell
Journal
ACS Applied Energy Materials
Journal Volume
4
Journal Issue
3
Pages
2041-2048
Date Issued
2021
Author(s)
Lin J.-T
Chu T.-C
Chen D.-G
Huang Z.-X
Chen H.-C
Li C.-S
Wu C.-I
Chou P.-T
Chiu C.-W
Abstract
Tin perovskite solar cells (PSCs) have been attracting attention in photovoltaic application, while the performance of Sn PSCs, especially for hole-transporting materials (HTMs)-free configuration, is relatively poor because of short mean-free-path for photogenerated charge carriers. We report a p-n junction with spatially appropriate architecture and energetic alignment in perovskite light-absorbing layer, resulting in an excellent performance of HTM-free Sn PSCs with a power conversion efficiency (PCE) of 5.17%, the highest value reported in HTM-free Sn PSCs. The p-n junction configuration plays a key role in achieving high efficiency and realizing excellent stability for more than 200 h operation. ?
Subjects
Carrier mobility; Conversion efficiency; Efficiency; Heterojunctions; Perovskite; Tin; Absorbing layers; High-efficiency; Hole-transporting materials; Mean free path; P-n junction; Photogenerated charge carriers; Photovoltaic applications; Power conversion efficiencies; Perovskite solar cells
SDGs
Other Subjects
Carrier mobility; Conversion efficiency; Efficiency; Heterojunctions; Perovskite; Tin; Absorbing layers; High-efficiency; Hole-transporting materials; Mean free path; P-n junction; Photogenerated charge carriers; Photovoltaic applications; Power conversion efficiencies; Perovskite solar cells
Type
journal article