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SUMMARY:Green Synthesis Approaches of Metal Halide Perovskites for Efficie
 nt Solar Cells and Beyond - Prof Hongxia Wang - Queensland University of T
 echnology\, Australia
DTSTART:20250919T100000Z
DTEND:20250919T110000Z
UID:TALK236113@talks.cam.ac.uk
CONTACT:131674
DESCRIPTION:Semiconductor materials based on metal halide perovskites have
  attracted significant attention from both the research community and indu
 stry over the past decade\, due to their impressive performance in solar c
 ells and other optoelectronic devices such as light-emitting diodes.\n\nCu
 rrently\, the most widely used methods for synthesizing perovskite films r
 ely on solution processing which involves large quantities of hazardous\, 
 highly coordinating aprotic polar solvents\, such as dimethylformamide (DM
 F). The toxic nature of these solvents raises serious concerns regarding t
 heir impact on human health\, safety\, and the environment. In particular\
 , DMF—one of the most commonly used solvents in current perovskite synth
 esis—has been officially banned for use in manufacturing within Europe. 
 This regulatory restriction poses a significant barrier to the commercial 
 production of metal halide perovskite materials for various applications (
 1).\n\nTherefore\, it is critical to develop alternative\, sustainable sol
 ution-processing methods that employ environmentally friendly\, green solv
 ent systems. In my talk\, I will present our research on the development o
 f green processing techniques for synthesizing metal halide perovskites us
 ing environmentally benign solvents such as water\, protic ionic liquids\,
  and biomass-derived solvents (2\,3).\n\nI will demonstrate how the choice
  of solvent system during synthesis influences the physicochemical propert
 ies of the resulting perovskite materials—including their morphology\, a
 nd optical and electrical characteristics—as well as the selection of pr
 ecursor materials. These factors\, in turn\, play a decisive role in deter
 mining device performance and stability in applications such as solar cell
 s and light-emitting diodes.\n\nReference\n[1].  Minh Tam Hoang\, Feray Ü
 nlü\, Wayde Martens\, John Bell\, Sanjay Mathur\, Hongxia Wang\, “Towar
 ds the environmentally friendly solution processing of metal halide perovs
 kite technology”\, Green Chemistry\, 2021\, 23\, 5302-5336.\n[2]. Minh T
 am Hoang\, Yang Yang\, Ngoc Duy Pham\, Hongxia Wang\, “Ecofriendly Solut
 ion Processing of Perovskite Solar Cells using Water”\, The Journal of P
 hysical Chemistry Letters\, 2024\, 15(26)\, 6880-6889.\n[3]. Minh Tam Hoan
 g\, Ngoc Duy Pham\, Yang Yang\, Vincent Tiing Tiong\, Chao Zhang\, Ke Gui\
 , Hong Chen\, Jin Chang\, Jianpu Wang\, Dmitri Golberg\, John Bell\, Hongx
 ia Wang\, A facile\, environmentally friendly synthesis of strong photo-em
 issive methylammonium lead bromide perovskite nanocrystals enabled by ioni
 c liquids’\, Green Chemistry\, 2020\, 22(11)\, 3433-3440.
LOCATION:Lecture Theatre 1\, Department of Chemical Engineering and Biotec
 hnology\, West Cambridge Site
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