Imperial College London
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Professor Martyn A McLachlan

Faculty of Engineering, Department of Materials

Professor of Thin Films, Interfaces and Electronic Devices
 
 
 
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Contact

 

+44 (0)20 7594 9692martyn.mclachlan Website

 
 
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Location

 

401 HMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lin:2020:10.1039/d0ta01606c,
author = {Lin, C-T and Ngiam, J and Xu, S and Chang, Y-H and Du, T and Macdonald, TJ and Durrant, J and McLachlan, M},
doi = {10.1039/d0ta01606c},
journal = {Journal of Materials Chemistry A},
pages = {8684--8691},
title = {Enhancing the operational stability of unencapsulated perovskite solar cells through Cu-Ag bilayer electrode incorporation},
url = {http://dx.doi.org/10.1039/d0ta01606c},
volume = {8},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We identify a facile strategy that significantly reduces electrode corrosion and device degradation in unencapsulated perovskite solar cells (PSCs) operating in ambient air. By employing Cu-Ag bilayer top electrodes PSCs, we show enhanced operational lifetime compared with devices prepared from single metal (Al, Ag and Cu) analogues. Time-of-flight secondary ion mass spectrometry depth profiles indicate that the insertion of the thin layer of Cu (10nm) below the Ag (100nm) electrode significantly reduces diffusion of species originating in the perovskite active layer into the electron transport layer and electrode. X-ray diffraction (XRD) analysis reveals the mutually beneficial relationship between the bilayer metals, whereby the thermally evaporated Ag inhibits Cu oxidation and the Cu prevents interfacial reactions between the perovskite and Ag. The results here not only demonstrate a simple approach to prevent the electrode and device degradation that enhance lifetime and stability but also give an insight into ageing related ion migration and structural reorganisation.
AU  - Lin,C-T
AU  - Ngiam,J
AU  - Xu,S
AU  - Chang,Y-H
AU  - Du,T
AU  - Macdonald,TJ
AU  - Durrant,J
AU  - McLachlan,M
DO  - 10.1039/d0ta01606c
EP  - 8691
PY  - 2020///
SN  - 2050-7488
SP  - 8684
TI  - Enhancing the operational stability of unencapsulated perovskite solar cells through Cu-Ag bilayer electrode incorporation
T2  - Journal of Materials Chemistry A
UR  - http://dx.doi.org/10.1039/d0ta01606c
UR  - https://pubs.rsc.org/en/Content/ArticleLanding/2020/TA/D0TA01606C#!divAbstract
UR  - http://hdl.handle.net/10044/1/78013
VL  - 8
ER  -
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