Liquid-phase sintering of lead halide perovskites and metal-organic framework glasses

DOI: 10.1126/science.abf4460

Authors: Jingwei Hou (The University of Queensland) , Peng Chen (The University of Queensland) , Atul Shukla (The University of Queensland) , Andraž Krajnc (National Institute of Chemistry) , Tiesheng Wang (Shanghai Jiao Tong University) , Xuemei Li (The University of Queensland) , Rana Doasa (University of Leeds) , Luiz H. G. Tizei (Université Paris-Saclay, CNRS) , Bun Chan (Nagasaki University) , Duncan N. Johnstone (University of Cambridge) , Rijia Lin (The University of Queensland) , Tobias U. Schülli (The European Synchrotron Radiation Facility (ESRF)) , Isaac Martens (The European Synchrotron Radiation Facility (ESRF)) , Dominique Appadoo (Australian Synchrotron) , Mark S'Ari (University of Leeds) , Zhiliang Wang (The University of Queensland) , Tong Wei (Civil Aviation University of China) , Shih-Chun Lo (The University of Queensland) , Mingyuan Lu (The University of Queensland) , Shichun Li (Institute of Chemical Materials, China Academy of Engineering Physics) , Ebinazar B. Namdas (The University of Queensland) , Gregor Mali (National Institute of Chemistry) , Anthony K. Cheetham (University of California; National University of Singapore) , Sean M. Collins (University of Leeds) , Vicki Chen (The University of Queensland) , Lianzhou Wang (The University of Queensland) , Thomas D. Bennett (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Science , VOL 374 , PAGES 621 - 625

State: Published (Approved)
Published: October 2021
Diamond Proposal Number(s): 21980 , 25140

Abstract: Lead halide perovskite (LHP) semiconductors show exceptional optoelectronic properties. Barriers for their applications, however, lie in their polymorphism, instability to polar solvents, phase segregation, and susceptibility to the leaching of lead ions. We report a family of scalable composites fabricated through liquid-phase sintering of LHPs and metal-organic framework glasses. The glass acts as a matrix for LHPs, effectively stabilizing nonequilibrium perovskite phases through interfacial interactions. These interactions also passivate LHP surface defects and impart bright, narrow-band photoluminescence with a wide gamut for creating white light-emitting diodes (LEDs). The processable composites show high stability against immersion in water and organic solvents as well as exposure to heat, light, air, and ambient humidity. These properties, together with their lead self-sequestration capability, can enable breakthrough applications for LHPs.

Diamond Keywords: Semiconductors

Subject Areas: Materials, Chemistry

Diamond Offline Facilities: Electron Physical Sciences Imaging Centre (ePSIC)
Instruments: E02-JEM ARM 300CF

Other Facilities: THz/Far-IR, SAXS, and PD at Australian Synchrotron; ID31 at ESRF

Added On: 01/11/2021 10:08

Discipline Tags:

Chemistry Materials Science Metal-Organic Frameworks Perovskites Metallurgy Organometallic Chemistry

Technical Tags:

Microscopy Electron Microscopy (EM) Scanning Transmission Electron Microscopy (STEM)