Solution-processable perylene diimide-based electron transport materials as non-fullerene alternatives for inverted perovskite solar cells
Abstract
Perylene diimide derivatives with different functional groups (OR) in the bay position were synthesised (PDI-1, OR = OC6H4OMe; PDI-2, OR = OC6H4CH2CH2NHBoc; PDI-3, OR = OC6H4CO2Me) and their optoelectronical properties were characterised. The derivatives were applied as alternative electron transport materials (ETMs) to replace the commonly used PCBM in inverted perovskite solar cells (PSCs). Devices with the structure ITO/PTAA/Cs0.04(MA0.17FA0.83)0.96Pb(I0.83Br0.17)3/ETM/Ag (ETM = PCBM or PDI-1, -2 or -3) were fabricated through solution processing techniques. A competitive power conversion efficiency (PCE) of 16.8% was obtained for the PDI-3-based device, which was comparable to the PCBM-based device with PCE of 17.3%. It was found that the electronic nature of the functional groups plays an important role in the charge extraction and band alignment of these small molecular semiconductors.
Citation
Soto Perez , G , Dasgupta , S , Żuraw , W , Pineda , R F , Wojciechowski , K , Jagadamma , L K , Samuel , I & Robertson , N 2022 , ' Solution-processable perylene diimide-based electron transport materials as non-fullerene alternatives for inverted perovskite solar cells ' , Journal of Materials Chemistry A , vol. Advance Article . https://doi.org/10.1039/D2TA01321E
Publication
Journal of Materials Chemistry A
Status
Peer reviewed
ISSN
2050-7488Type
Journal article
Description
Financial support from the National Council of Science and Technology (Conacyt) Mexico. Funding from the Foundation of Polish Science (First TEAM/2017-3/30).Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.