Copper coordination polymers with selective hole conductivity
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Emerging technologies in solar energy will be critical in enabling worldwide society in overcoming the present energy challenges and reaching carbon net zero. Inefficient and unstable charge transport materials limit the current emerging energy conversion and storage technologies. Low-dimensional coordination polymers represent an alternative, unprecedented class of charge transport materials, comprised of molecular building blocks. Here, we provide a comprehensive study of mixed-valence coordination polymers from an analysis of the charge transport mechanism to their implementation as hole-conducting layers. CuII dithiocarbamate complexes afford morphology control of 1D polymer chains linked by (CuI2X2) copper halide rhombi. Concerted theoretical and experimental efforts identified the charge transport mechanism in the transition to band-like transport with a modeled effective hole mass of 6me. The iodide-bridged coordination polymer showed an excellent conductivity of 1 mS cm−1 and a hole mobility of 5.8 10−4 cm2 (V s)−1 at room temperature. Nanosecond selective hole injection into coordination polymer thin films was captured by nanosecond photoluminescence of halide perovskite films. Coordination polymers constitute a sustainable, tunable alternative to the current standard of heavily doped organic hole conductors.
Date Issued
2022-03-17
Date Acceptance
2022-03-14
Citation
Journal of Materials Chemistry A, 2022, 10 (17), pp.9582-9591
ISSN
2050-7488
Publisher
Royal Society of Chemistry
Start Page
9582
End Page
9591
Journal / Book Title
Journal of Materials Chemistry A
Volume
10
Issue
17
Copyright Statement
Open Access Article. Published on 17 March 2022. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
License URL
Sponsor
The Royal Society
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000775100700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
RGF/EA/180048
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Chemistry
Materials Science
PEROVSKITE SOLAR-CELLS
SPIRO-MEOTAD
HIGHLY EFFICIENT
TRANSPORT LAYERS
REDOX MEDIATORS
STABILITY
METAL
DOPANT
FRAMEWORKS
COMPLEX
Publication Status
Published
Date Publish Online
2022-03-17