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Improving the Performance of Planar Perovskite Solar Cells through Pre-heated, Delaying Annealing Process to Control Nucleation and Phase Transition of Perovskite Films

Hui Liu, Hairui Liu, Jien Yang, Feng Yang, Zhiyong Liu, Sagar Jain

Crystal Growth & Design

Swansea University Author: Sagar Jain

Abstract

Obtaining good quality perovskite absorber film remains a challenging task that limits performance of planar perovskite solar cells. . In this work, we demonstrated the importance of pre-heating treatment on perovskite nucleation and phase transition. . Fine-tuning the appropriate pre-heating and st...

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Published in: Crystal Growth & Design
ISSN: 1528-7483 1528-7505
Published: 2019
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa50828
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Abstract: Obtaining good quality perovskite absorber film remains a challenging task that limits performance of planar perovskite solar cells. . In this work, we demonstrated the importance of pre-heating treatment on perovskite nucleation and phase transition. . Fine-tuning the appropriate pre-heating and standing time resulted in the formation of high quality perovskite films with enhanced optoelectronic properties.. Pre-heated perovskite films with delaying of 1 hour post-annealing achieved the hysteresis-free, record power conversion efficiency (PCE) of 16.18%. While the perovskite films without preheating treatment in solar cells shown only12.35% efficiency.. This improved performance with pre-heating treatment and delay annealing of perovskite films found as a result of homogeneous nucleation and formation of high quality perovskite films. Improved perovskite quality is further evidenced from enhanced optoelectronic and crystalline properties of the perovskite absorber after preheating treatment.
College: College of Engineering