| Title: |
Copper coordination polymers with selective hole conductivity |
| Authors: |
Michaels, H; Golomb, MJ; Kim, BJ; Edvinsson, T; Cucinotta, F; Waddell, PG; Probert, MR; Konezny, SJ; Boschloo, G; Walsh, A; Freitag, M |
| Contributors: |
The Royal Society |
| Source: |
9591 ; 9582 |
| Publisher Information: |
Royal Society of Chemistry |
| Publication Year: |
2022 |
| Collection: |
Imperial College London: Spiral |
| Subject Terms: |
Science & Technology; Physical Sciences; Technology; Chemistry; Physical; Energy & Fuels; Materials Science; Multidisciplinary; PEROVSKITE SOLAR-CELLS; SPIRO-MEOTAD; HIGHLY EFFICIENT; TRANSPORT LAYERS; REDOX MEDIATORS; STABILITY; METAL; DOPANT; FRAMEWORKS; COMPLEX; 0303 Macromolecular and Materials Chemistry; 0912 Materials Engineering; 0915 Interdisciplinary Engineering |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
Journal of Materials Chemistry A; http://hdl.handle.net/10044/1/96367; RGF/EA/180048 |
| DOI: |
10.1039/d2ta00267a |
| Availability: |
http://hdl.handle.net/10044/1/96367; https://doi.org/10.1039/d2ta00267a |
| Rights: |
Open Access Article. Published on 17 March 2022. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. ; https://creativecommons.org/licenses/by/3.0/ |
| Accession Number: |
edsbas.FB93F7A7 |
| Database: |
BASE |