Room temperature synthesis of perovskite (MAPbI3) single crystal by anti-solvent assisted inverse temperature crystallization method

Ramashanker Gupta, Tulja Bhavani Korukonda, Shailendra Kumar Gupta, Bhanu Pratap Dhamaniya, Priyanka Chhillar, Ram Datt, Pargam Vashishtha, Govind Gupta, Vinay Gupta, Ritu Srivastava, Sandeep Pathak

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Hybrid organic-inorganic lead halide perovskites have shown excellent photovoltaic performance due to their remarkable unique optoelectronic properties in their polycrystalline thin film; however their performance is limited due to the presence of grain boundaries. It is noted that perovskite single crystals have larger domains and hence significantly low trap density with higher diffusion length. In the present manuscript, we report the anti-solvent modified inverse-temperature-crystallization (ITC) approach to synthesis perovskite (MAPbI3) single crystals (1 cm in size) of superior opto-electronic quality at room temperature (30 °C/RT). To accomplish this first we have developed an understanding on the role of various growth parameters such as temperatures and precursor compositions (amount of anti-solvent and solution molarity) during crystal growth via ITC process in attaining the suitable condition for crystal. Careful control over the amount of anti-solvent and solution molarity helps in realizing the crystal growth even at very high temperatures (140 °C) as well as at room temperature. Specifically, the quality of RT crystals was compared with control (60 °C) crystals and high temperature (140 °C/HT) crystals using XRD, vis-NIR absorbance, photoluminescence (PL) and scanning electron microscope (SEM) analysis. The RT single crystals are compared with the control and HT single crystal.

Original languageBritish English
Article number125598
JournalJournal of Crystal Growth
Volume537
DOIs
StatePublished - 1 May 2020

Keywords

  • A1. Antisolvent
  • A2. Inverse temperature crystallization
  • A2. Perovskite single crystal
  • A2. Room temperature crystal growth

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