Author Affiliations
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, Chinashow less
Fig. 1. Schematic of metal halide perovskite ABX3 structure
Fig. 2. Photographs and PL spectra of APbX
3 perovskite QDs under UV-lamp, where A=MA, Cs, or FA, and X=Cl, Br, or I
[31] Fig. 3. Spectra. (a) PL spectra of Li
+-doped MAPbI
3 films
[35]; (b) absorption and PL spectra of Rb
+-doped CsPbBr
3 QDs
[40]; (c) absorption and PL spectra of Na
+-doped CsPbBr
3 QDs
[36]; (d) absorption and PL spectra of K
+-doped CsPbCl
3 QDs
[38] Fig. 4. TEM images of CsPb
xMn
1-xCl
3 QDs and PL emission spectra
[49]. (a)‒(d) Molar ratios of Pb to Mn are 1∶1.25, 1∶2.5, 1∶5, and 1∶10, respectively; (e)‒(f) absorption and PL spectra
Fig. 5. Energy level diagram of Mn
2+-doped CsPbX
3 QDs
[52] Fig. 6. CsPb
1-xSn
xBr
3 perovskite QDs synthesized with solution re-precipitation
[58]. (a) Photographs of CsPb
1-xSn
xBr
3 perovskite QDs under 365 nm UV illumination; (b)‒(c) absorption and PL spectra of CsPb
1-xSn
xBr
3 perovskite QDs with different Sn
2+-doping concentrations
Fig. 7. Cs
2SnI
6 perovskite nanocrystals
[62]. (a) Morphology schematics of synthesized Cs
2SnI
6 perovskite nanocrystals and their photographs; (b)‒(f) Cs
2SnI
6 perovskite nanocrystals with different shapes
Fig. 8. Optical properties of CsPbX
2 perovskite doped with divalent metal ions. (a)‒(c) PL and absorption spectra and PL decay traces of CsPbCl
3 QDs and Ni
2+-doped CsPbCl
3 QDs under UV (365 nm) illumination, and PL decay trace of Ni
2+-doped CsPbCl
3 QDs (doping concentration of 11.9%), showing a fast and a slow component
[66]; (d)‒(f) photos, PLQY, and XRD of undoped and Sr
2+-doped CsPbI
3 QDs under UV-light (365 nm) irradiation, the doping concentration(molar fraction) of SrI
2 is 0%, 40%, and 60%
[71]; (g)‒(i) absorption and PL spectra, PL peak,PLQY and decay curves of CsPbI
3 QDs and CsPb
1-xZn
xI
3 QDs
[73] Fig. 9. Photoelectric properties of Bi
3+ doped perovskite. (a)‒(d) Unit cell structures and absorption and PL spectra of Cs
3Bi
2X
9 perovskite QDs
[78]; (e)‒(f) crystal structures of δ-CsPbI
3 and α-CsPbI
3, respectively, and surface morphologies and illumination picture of CsPb
1-xBi
xI
3 (0≤
x<0.1) perovskites
[80] Fig. 10. Optical properties of rare earth ion (RE3+) doped perovskite materials. (a)‒(c) Absorption and emission spectra of CsPbClxBr3-x and CsPbClxBr3-x QDs doped with different lanthanide ions; (d) schematic of energy transfer mechanism in the Yb3+, Ce3+ co-doped CsPbCl1.5Br1.5 QDs
Cationic group or metal ion | Radius /Å | Cationic group or metal ion | Radius /Å |
---|
Ammonium (NH4+) | 1.46 | Guanidinium ((NH2)3C+) | 2.78 | Hydroxylammonium (NH3OH+) | 2.16 | Tetramethylammonium ((CH3)4N+) | 2.92 | Methylammonium (CH3NH3+) | 2.17 | Thiazolium (C3H4NS+) | 3.20 | Hydrazinium (NH3NH2+) | 2.17 | Tropylium (C7H7+) | 3.33 | Azetidinium ((CH2)3NH2+) | 2.50 | Piperazinium (C4H12N22+) | 3.22 | Formamidinium (CH(NH2)2+) | 2.53 | Cs+ | 1.67 | Imidazolium (C3N2H5+) | 2.58 | Rb+ | 1.52 | Dimethylammonium ((CH3)2NH2+) | 2.72 | K+ | 1.38 | Ethylammonium (CH3CH2NH3+) | 2.74 | Na+ | 1.02 | Pyrrolinium (NC4H8+) | 2.72 | Li+ | 0.76 | Dabconium (C6H14N22+) | 3.39 | | |
|
Table 1. Effective ionic radii of organic molecular cations and metal ion (A-site doping )
Metal ion | Radius /Å | Metal ion | Radius /Å |
---|
Be2+ | 0.45 | Pd2+ | 0.86 | Mg2+ | 0.72 | Pt2+ | 0.80 | Ca2+ | 1.00 | Cu2+ | 0.73 | Sr2+ | 1.18 | Ag2+ | 0.94 | Ba2+ | 1.35 | Zn2+ | 0.74 | Ti2+ | 0.86 | Cd2+ | 0.95 | V2+ | 0.79 | Hg2+ | 1.02 | Cr2+ | 0.80 | Ge2+ | 0.73 | Mn2+ | 0.83 | Sn2+ | 1.15 | Fe2+ | 0.78 | Pb2+ | 1.19 | Co2+ | 0.75 | Sm2+ | 1.22 | Ni2+ | 0.69 | Eu2+ | 1.17 | Dy2+ | 1.07 | Ce3+ | 1.01 | Tm2+ | 1.03 | Pr3+ | 0.99 | Yb2+ | 1.02 | Nd3+ | 0.98 | Np2+ | 1.10 | Sm3+ | 0.96 | Tl+ | 1.50 | Eu3+ | 0.95 | Cu+ | 0.77 | Gd3+ | 0.9 | Ag+ | 1.15 | Dy3+ | 0.91 | Au+ | 1.37 | Er3+ | 0.89 | Au3+ | 0.85 | Tm3+ | 0.88 | Sb3+ | 0.76 | Lu3+ | 0.86 | Bi3+ | 1.03 | Pu3+ | 1.00 | La3+ | 1.03 | | |
|
Table 2. Effective ionic radii of metal ions (B-site doping )