.png){kind=icon}
.png){kind=icon}
Return
Highly Transparent Carbazole-based Polymer Hole Transporting Materials for Inverted Perovskite Solar Cells
.png){kind=icon}
PRE
AI
H
Z
S
Z
L
L
DOI：10.11777/j.issn1000-3304.2025.25299.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
In this study, a new class of highly transparent hole transporting materials (HTMs), namely PBN-3,6-Cz and PBN-2,7-Cz, were been designed and synthesized by copolymerizing carbazole with 3,3 ''-benzo[e]-cyclopenta[b]indole-substituted p-terphenyl units. This molecular design aimed to mitigate parasitic absorption in the hole transport layer of inverted perovskite solar cells (PSCs). Both polymer HTMs exhibited appropriate energy levels and high hole mobility, while achieving optical average transmittance values exceeding 94% in the 350-450 nm range, significantly higher than that of the reference PTAA (82.3%). This high transparency effectively minimized the optical losses from interfacial parasitic absorption. By tailoring the substitution sites of the carbazole units, we further regulated the charge transport properties of the polymers and the crystallization behavior of the perovskite films. As a result, the inverted PSCs based on PBN-2,7-Cz achieved a power conversion efficiency of 18.21% and a short-circuit current density of 24.33 mA & centerdot;cm(-2), surpassing the performance of the reference PTAA-based devices (18.07% and 24.03 mA & centerdot;cm(-2)).
Keywords:
Perovskite solar cells
Hole transporting materials
Conjugated polymers
Carbazole
Transmittance
Journal
A
IF:
1.3
Papers:
180
Citations:
1.2K
Organization
Cited Papers