|
Type |
Poster Presentation |
Area |
Polymer Chemistry |
Room No. |
Exhibition Hall 2+3 |
Time |
10월 20일 (금요일) 13:00~14:30 |
Code |
POLY.P-4 |
Subject |
Room-Temperature Synthesis of Widely Tunable Formamidinium Lead Halide Perovskite Nanocrystals: A New Candidate for Optoelectronic Devices |
Authors |
DUONG NGUYEN MINH, Youngjong Kang* Department of Chemistry, Hanyang University, Korea |
Abstract |
Colloidal perovskites nanocrystals based on formamidinium lead halide (FAPbX3) have been synthesized by ligand assisted reprecipitation method using PbX2-DMSO complexes as precursors at room temperature. Well-defined cubic-shaped FAPbX3 nanocrystals have been obtained with a size of d = ~10 nm. The synthesized FAPbX3 nanocrystals show bright photoluminescence with a high photoluminescence quantum yield (PLQY for FAPbBr3 = 75%). The lifetimes of FAPbBr3 nanocrystals were measured for the samples isolated at several different centrifugal speeds. The photoluminescence is able to be tuned from blue to near infrared region (λpeak = 408–784 nm) either by changing the amount of oleylamine or the composition of X. The color expression range is 135% of NTSC standard. The band width of the photoluminescence spectra of FAPbX3 nanocrystals is narrow (FWHM = 18–48 nm). FAPbX3 nanocrystals show better thermal stability than MAPbBr3 nanocrystals. |
E-mail |
minhduong92@gmail.com |