Metallated Macrocyclic Derivatives as a Hole - Transporting Materials for Perovskite Solar Cells

Reddy, G, Devulapally, K, Islavath, N and Lingamallu, G 2019, 'Metallated Macrocyclic Derivatives as a Hole - Transporting Materials for Perovskite Solar Cells', Chemical Record, vol. 19, pp. 1-22.


Document type: Journal Article
Collection: Journal Articles

Title Metallated Macrocyclic Derivatives as a Hole - Transporting Materials for Perovskite Solar Cells
Author(s) Reddy, G
Devulapally, K
Islavath, N
Lingamallu, G
Year 2019
Journal name Chemical Record
Volume number 19
Start page 1
End page 22
Total pages 22
Publisher Wiley
Abstract Spiro-OMeTAD is widely used as thehole-transporting material (HTM) in perovskite solar cells (PSC), which extracts positive charges and protects the perovskite materials from metal electrode, setting a new world-record efficiency of more than 20 %. Spiro-OMeTAD layer engross moisture leading to the degradation of perovskite, and therefore, has poor air stability. It is also expensive therefore limiting scale-up, so macrocyclic metal complex derivatives (MMDs) could be a suitable replacement. Our review covers low-cost, high yield hydrophobic materials with minimal steps required for synthesis of efficient HTMs for planar/mesostructured PSCs. The MMDs based devices demonstrated PCEs around 19 % and showed stability for a longer duration, indicating that MMDs are a promising alternative to spiro-OMeTAD and also easy to scale-up via solution approach. Additionally, this review describes how optical and electrical properties of MMDs change with chemical structure, allowing for the design of novel hole-mobility materials to achieve negligible hysteresis and act as effective functional barriers against moisture which results in a significant increase in the stability of the device. We provide an overview of the apt green-synthesis, characterization, stability and implementation of the various classes of macrocyclic metal complex derivatives as HTM for photovoltaic applications.
Subject Synthesis of Materials
Photodetectors, Optical Sensors and Solar Cells
Keyword(s) Hole transporting materials
Macrocyclic metal complex derivatives
Perovskite solar cells.
DOI - identifier 10.1002/tcr.201800171
Copyright notice © 2019 The Chemical Society of Japan & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN 1527-8999
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