A Universal Co-Solvent Evaporation Strategy Enables Direct Printing of Perovskite Single Crystals for Optoelectronic Device Applications

Daniel Alejandro Corzo Diaz, Tonghui Wang, Murali Gedda, Emre Yengel, Jafar Iqbal Khan, Ruipeng Li, Muhammad Rizwan Niazi, Zhengjie Huang, Taesoo Kim, Derya Baran, Dali Sun, Frédéric Laquai, Thomas D. Anthopoulos, Aram Amassian

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Solution-processed metal halide perovskite single crystals (SCs) are in high demand for a growing number of emerging device applications due to their superior optoelectronic properties compared to polycrystalline thin films. However, the historical focus on thin film optoelectronic and photovoltaic devices explains the absence of methods suitable for facile, scalable and high throughput fabrication of precision-engineered and positioned SCs and arrays. Here, we present a universal co-solvent evaporation (CSE) strategy by which perovskite SCsand arrays are produced directly on substrates from individual drying droplets in a single step within minutes at room temperature. The CSE strategy successfully guides supersaturation of drying droplets to suppress all unwanted crystallization pathways and is shown to produce SCsof a wide variety of three-dimensional (3D), quasi-two dimensional (2D), and mixed cation/halideperovskites. The drying droplet approach works with commonly used solvents, making it universal. Importantly, the CSE strategy ensures the SC consumes the precursor in its entirety, leaving little to no residue on substrates, which is crucial for enabling fabrication of SC arrays on large areas via printing and coating techniques. We go on to demonstrate direct on-chip fabrication of 3D and quasi-2D perovskite photodetector devices with outstanding performance. Our approach shows that metal halide perovskite SCs can now be produced on substrates from a drying solution via a wide range of solution processing methods, including microprinting and scalable, high throughput coating methods.
Original languageEnglish (US)
Pages (from-to)2109862
JournalAdvanced Materials
StatePublished - Jan 10 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-01-13
Acknowledgements: TW, ZW, DS and AA, acknowledge the support of the NSF ECCS-1936527 project.

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Mechanical Engineering


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