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Supramolecular assembly of blue and green halide perovskites with near-unity photoluminescence.
Zhu, Cheng; Jin, Jianbo; Wang, Zhen; Xu, Zhenpeng; Folgueras, Maria C; Jiang, Yuxin; Uzundal, Can B; Le, Han K D; Wang, Feng; Zheng, Xiaoyu Rayne; Yang, Peidong.
Affiliation
  • Zhu C; Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, USA.
  • Jin J; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
  • Wang Z; Kavli Energy NanoScience Institute, Berkeley, CA 94720, USA.
  • Xu Z; Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.
  • Folgueras MC; Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, USA.
  • Jiang Y; Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, USA.
  • Uzundal CB; Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, USA.
  • Le HKD; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
  • Wang F; Kavli Energy NanoScience Institute, Berkeley, CA 94720, USA.
  • Zheng XR; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
  • Yang P; Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA.
Science ; 383(6678): 86-93, 2024 Jan 05.
Article in En | MEDLINE | ID: mdl-38175897
ABSTRACT
The metal-halide ionic octahedron is the optoelectronic unit for halide perovskites, and a crown ether-assisted supramolecular assembly approach can pack various ionic octahedra into tunable symmetries. In this work, we demonstrate near-unity photoluminescence quantum yield (PLQY) blue and green emission with the supramolecular assembly of hafnium (Hf) and zirconium (Zr) halide octahedral clusters. (18C6@K)2HfBr6 powders showed blue emission with a near-unity PLQY (96.2%), and green emission was also achieved with (18C6@K)2ZrCl4Br2 powders at a PLQY of 82.7%. These highly emissive powders feature facile low-temperature solution-based synthesis conditions and maintain high PLQY in solution-processable semiconductor inks under ambient conditions, and they were used in thin-film displays and emissive three-dimensional-printed architectures that exhibited high spatial resolution.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2024 Document type: Article Affiliation country: Estados Unidos Country of publication: Estados Unidos
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2024 Document type: Article Affiliation country: Estados Unidos Country of publication: Estados Unidos