Advanced Materials. 2016: 1602513
d.Hot-injection Process (HI Process)
160℃
（1）Cs-OA+PbX2 System
ACS Nano 2015, 9 (4),4533-4542
OAmX
Nano Lett. 2015,15,5635-5640
performance
Low-cost, facile synthesis
Nano Lett. 2015, 15, 5635-5640 ACS Energy Lett. 2018, 3, 641-646 ACS Nano. 2015, 10, 1795-1801 RSC Advances, 2017, 7(17): 10391-10396
03
Synthetic methods
a.Ultrasonic-assisted Method
AX(=MAX,CsX,FAX):PbX2:OA m=1:1:3 dispersed in Toluene
Ultrasonic irradiation accelerates dissolution of the precursors (AX and PbX2) in toluene J.Mater.Chem.C. 2016,4,10625-10629
• 14.Lin K, Xing J, Quan L N, et al. Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent[J]. Nature, 2018, 562(7726): 245.
High photoluminescence quantum yield (PL QY)
(＞90%)
B
Ease of bandgap tuning A
(410-700nm)
Properties
C
Narrow full-width at halfmaximum (FWHM) (10-40nm)
E
D Excellent photoelectric
CONTENTS
Background
1
Synthetic methods
3
References
5
2
4
Structure and Properties Application
01 Background
Organic-Inorganic Metal Halide Perovskite
A=CH3NH3+(MA+) , NH2CH=NH2+(FA+) B=Pb2+ , Sn2+ X=Cl-, Br-, I-
• 7.Bade S G R, Li J, Shan X, et al. Fully printed halide perovskite lightemitting diodes with silver nanowire electrodes[J]. Acs Nano, 2015, 10(2): 1795-1801.
• 12. Imran M, Caligiuri V, Wang M, et al. Benzoyl Halides as Alternative Precursors for the Colloidal Synthesis of Lead-Based Halide Perovskite Nanocrystals. J Am Chem Soc, 2018, 140(7): 2656-2664.
References
• 6.Nedelcu G, Protesescu L, Yakunin S, et al. Fast anion-exchange in highly luminescent nanocrystals of cesium lead halide perovskites (CsPbX3, X= Cl, Br, I)[J]. Nano Letters, 2015, 15(8): 5635-5640.
4.High defect tolerance 5.Narrow FWHM
Disadvantage
1. Not environmentally friendly 2. Stability is wrose than traditional
II-VI semiconductor
05 References
（2）CH3COO- System
160℃-200℃
2Pb(CH3COO)2+CH3COOCs+3Ph-COX
CsPbX3 NCs+Pb(oleate)2
Oleylamine/Oleic acid
J. Am. Chem. Soc. 2018, 140, 2656-2664
J. Am. Chem. Soc. 2018, 140, 2656-2664
• 9.Song J, Li J, Xu L, et al. Room‐Temperature Triple‐Ligand Surface Engineering Synergistically Boosts Ink Stability, Recombination Dynamics, and Charge Injection toward EQE‐11.6% Perovskite QLEDs[J]. Advanced Materials, 2018, 30(30): 1800764.
b.Ligand-assisted Precipitation (LARP)
Cs++PbBr2
TOAB+DDAB
OTAc
CsPbBr3
Advanced Materials, 2018: 1800764
Advanced Materials, 2018: 1800764
c. Spin-Coating Method
Structure of CsPbX3 (X=Cl,Br,I)
CsPbCl3 t=0.818
CsPbBr3 t=0.812
CsPbI3 t=0.805
Ionic radius Cs+ Pb2+
Cl-
Br-
I-
pm
167 119 181 196 220
Properties of CsPbX3 (X=Cl,Br,I)
The Goldschmidt tolerance factor :
Hexagonal
Orthorhombic
Tetragonal
0.75 Corundum structure
0.96 1
1.1
Cubic
Crystal Structure
Oxygen or Moisture-Induced Decomposition
J. Am. Chem. Soc. 2018, 140, 2656-2664
04 Application
APPLICATIONS
Photodetectors Lasers Solar cells Light-emitting diodes
Solar Cells
Science, 2019, 363(6424): 265-270.
References
• 11. Zhang, F.; Zhong, H. Z.; Chen, C.; Wu, X. G.; Hu, X. M.; Huang, H. L.; Han, J. B.; Zou, B. S.; Dong, Y. P., Brightly Luminescent and Color-Tunable Colloidal CH3NH3PbX3 (X = Br, I, Cl) Quantum Dots: Potential Alternatives for Display Technology. Acs Nano 2015, 9 (4), 4533-4542.
Light-emitting diodes (LEDs)
Blue emission: 470nm Green emission: 525nm Red emission: 625nm
Nature, 2018, 5Fra bibliotek2(7726): 245.
PROSPECT
Advantage
1.High PLQY 2. Precise tunable bandgaps 3. High light absorption coefficients
Nat. Commun., 2017, 8, 15218 Nano letters, 2014, 14(5): 2584-2590
All-Inorganic Lead Halide Perovskite
Nano Lett. 2015, 15, 3692-3696
02 Structure and
Properties
References
• 1.Aristidou N, Eames C, Sanchez-Molina I, et al. Fast oxygen diffusion and iodide defects mediate oxygen-induced degradation of perovskite solar cells[J]. Nature communications, 2017, 8: 15218.
• 10. Zhu B S, Li H Z, Ge J, et al. Room temperature precipitated dual phase CsPbBr 3–CsPb 2 Br 5 nanocrystals for stable perovskite light emitting diodes. Nanoscale, 2018, 10(41): 19262-19271.