Temperature-Induced Lattice Relaxation of Perovskite Crystal Enhances Optoelectronic Properties and Solar Cell Performance

Murali Banavoth, Emre Yengel, Wei Peng, Zhijie Chen, Mohd Sharizal Alias, Erkki Alarousu, Boon S. Ooi, Victor Burlakov, Alain Goriely, Mohamed Eddaoudi, Osman Bakr, Omar F. Mohammed

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Hybrid organic-inorganic perovskite crystals have recently become one of the most important classes of photoactive materials in the solar cell and optoelectronic communities. Albeit improvements have focused on state-of-the-art technology including various fabrication methods, device architectures, and surface passivation, progress is yet to be made in understanding the actual operational temperature on the electronic properties and the device performances. Therefore, the substantial effect of temperature on the optoelectronic properties, charge separation, charge recombination dynamics, and photoconversion efficiency are explored. The results clearly demonstrated a significant enhancement in the carrier mobility, photocurrent, charge carrier lifetime, and solar cell performance in the 60 ± 5 °C temperature range. In this temperature range, perovskite crystal exhibits a highly symmetrical relaxed cubic structure with well-aligned domains that are perpendicular to a principal axis, thereby remarkably improving the device operation. This finding provides a new key variable component and paves the way toward using perovskite crystals in highly efficient photovoltaic cells.
Original languageEnglish (US)
Pages (from-to)137-143
Number of pages7
JournalThe Journal of Physical Chemistry Letters
Volume8
Issue number1
DOIs
StatePublished - Dec 16 2016

Fingerprint Dive into the research topics of 'Temperature-Induced Lattice Relaxation of Perovskite Crystal Enhances Optoelectronic Properties and Solar Cell Performance'. Together they form a unique fingerprint.

Cite this