Broadband photodetectors from silane-passivated CsPbBr 3 nanocrystals by ultrasound-mediated synthesis.

Autor: Ely F; Renato Archer Information Technology Center - CTI, Campinas, SP, 13069-901, Brazil. fernando.ely@cti.gov.br.; Department of Materials Science & Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA., Vieira KO; Renato Archer Information Technology Center - CTI, Campinas, SP, 13069-901, Brazil. fernando.ely@cti.gov.br., Reyes-Banda MG; Department of Materials Science & Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA., Quevedo-Lopez M; Department of Materials Science & Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA.
Jazyk: angličtina
Zdroj: Nanoscale [Nanoscale] 2024 Jun 06; Vol. 16 (22), pp. 10833-10840. Date of Electronic Publication: 2024 Jun 06.
DOI: 10.1039/d3nr06564b
Abstrakt: Perovskite nanocrystals have excellent optical properties but suffer from environmental instability and production up-scaling which limit their commercial application. Here, we report the gram-scale ultrasound-mediated synthesis of silane passivated CsPbBr 3 nanocrystals using (3-aminopropyl) triethoxysilane (APTS) as the primary surface ligand surface. The surface engineering endowed the CsPbBr 3 @SiOR NCs with extended environmental stability, a narrow emission bandwidth and a high photoluminescence quantum yield (PLQY > 75%). Thanks to these excellent optical properties, high-efficiency lateral and vertical photodetectors were fabricated. In particular, the layered vertical photodiode composed of ITO/Ga 2 O 3 /CsPbBr 3 /Au exhibited a broadband photoresponse from 350-700 nm with a responsivity peaking at 44.5.1 A W -1 and specific detectivity above 10 13 Jones when illuminated at 470 nm wavelength and biased at +5 V. These results correspond to the best-in-class performance perovskite nanocrystal PD and confirm the extraordinary potential of CsPbBr 3 @SiOR for the development of efficient optoelectronic devices.
Databáze: MEDLINE
Externí odkaz: