TY - JOUR
T1 - Multicolored Mixed-Organic-Cation Perovskite Quantum Dots (FAxMA1-xPbX3, X = Br and I) for White Light-Emitting Diodes
AU - Zhang, Ya Wen
AU - Wu, Guan
AU - Dang, Hui
AU - Ma, Kangzhe
AU - Chen, Su
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/9/13
Y1 - 2017/9/13
N2 - Organometal halide perovskites (such as CH3NH3PbX3, X = Cl, Br, I) have received enormous interest due to their strikingly photoelectric properties. Here we develop a facile ligand-assisted reprecipitation method to synthesize NH2CH=NH2PbX3 (NH2CH=NH2+, FA; X = Br and I) perovskite quantum dots (QDs) at room temperature. The FAPbX3 perovskite QDs with uniform monodispersity (sized 4-7 nm) display relatively high photoluminescence quantum yields (PLQYs) of 60-75%. Through manipulating the mixed-organic-cation reactions, we achieve a series of multicolored perovskite QDs with continuously controllable emission wavelengths from 460 to 565 nm. Furthermore, we discuss the influence of ligands (oleic acid and n-octylamine) on PL properties and stabilities of perovskite QDs. Finally, we have successfully designed a white LED via compositing perovskite QDs and poly(methyl methacrylate) (PMMA), which presents a high color rendering index. Considering those remarkable achievements, we believe our work will have great potential to meet various optoelectronic applications.
AB - Organometal halide perovskites (such as CH3NH3PbX3, X = Cl, Br, I) have received enormous interest due to their strikingly photoelectric properties. Here we develop a facile ligand-assisted reprecipitation method to synthesize NH2CH=NH2PbX3 (NH2CH=NH2+, FA; X = Br and I) perovskite quantum dots (QDs) at room temperature. The FAPbX3 perovskite QDs with uniform monodispersity (sized 4-7 nm) display relatively high photoluminescence quantum yields (PLQYs) of 60-75%. Through manipulating the mixed-organic-cation reactions, we achieve a series of multicolored perovskite QDs with continuously controllable emission wavelengths from 460 to 565 nm. Furthermore, we discuss the influence of ligands (oleic acid and n-octylamine) on PL properties and stabilities of perovskite QDs. Finally, we have successfully designed a white LED via compositing perovskite QDs and poly(methyl methacrylate) (PMMA), which presents a high color rendering index. Considering those remarkable achievements, we believe our work will have great potential to meet various optoelectronic applications.
UR - http://www.scopus.com/inward/record.url?scp=85029542780&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.7b02309
DO - 10.1021/acs.iecr.7b02309
M3 - 文章
AN - SCOPUS:85029542780
SN - 0888-5885
VL - 56
SP - 10053
EP - 10059
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 36
ER -