A recent advances of blue perovskite light emitting diodes for next generation displays

Yung Jin Yoon; Jin Young Kim

doi:10.1088/1674-4926/42/10/101608

Journals >Journal of Semiconductors >Volume 42 >Issue 10 >Page 101608 > Article

Journal of Semiconductors
Vol. 42, Issue 10, 101608 (2021)

A recent advances of blue perovskite light emitting diodes for next generation displays

Yung Jin Yoon and Jin Young Kim

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Perovtronics Research Center, Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea

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DOI: 10.1088/1674-4926/42/10/101608 Cite this Article

Yung Jin Yoon, Jin Young Kim. A recent advances of blue perovskite light emitting diodes for next generation displays[J]. Journal of Semiconductors, 2021, 42(10): 101608 Copy Citation Text

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(Color online) Synthesis and engineering methods of PeNCs to improve the performance of the blue PeLEDs. Schematic diagrams of synthesis method of the blue emissive PeNCs through (a) hot injection method, (b) LARP method[20], and (c) halide exchange method[23]. Copyright © 2015, American Chemical Society. Schematic diagrams of strategy to improve the blue PeLEDs through (d) ligand exchange method[28], (e) halide defect passivation method[35], and (f) bipolar shell strategy on PeNCs[18]. Copyright © 2016, John Wiley and Sons, Copyright © 2020, American Chemical Society. Copyright © 2020, Springer Nature.

Fig. 1. (Color online) Synthesis and engineering methods of PeNCs to improve the performance of the blue PeLEDs. Schematic diagrams of synthesis method of the blue emissive PeNCs through (a) hot injection method, (b) LARP method^[20], and (c) halide exchange method^[23]. Copyright © 2015, American Chemical Society. Schematic diagrams of strategy to improve the blue PeLEDs through (d) ligand exchange method^[28], (e) halide defect passivation method^[35], and (f) bipolar shell strategy on PeNCs^[18]. Copyright © 2016, John Wiley and Sons, Copyright © 2020, American Chemical Society. Copyright © 2020, Springer Nature.

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(Color online) (a) Schematic diagrams of the Ruddlesden-Popper perovskite and quasi-2D perovskites[44]. Copyright © 2019, Springer Nature. (b) Emission spectra and (c) absorption spectra of quasi-2D perovskites with control of n values by adjustments of optical spacing molecule concentration[56]. Copyright © 2018, Springer Nature. (d) Schematic diagram of energy transfer in a quasi-2D perovskite film with mixed n values[45]. Copyright © 2019, Springer Nature. Operational stability of blue PeLEDs based on quasi-2D perovskite with (e) single halide composition[44] and (f) mixed halide composition[52]. Copyright © 2019 and 2020, Springer Nature.

Fig. 2. (Color online) (a) Schematic diagrams of the Ruddlesden-Popper perovskite and quasi-2D perovskites^[44]. Copyright © 2019, Springer Nature. (b) Emission spectra and (c) absorption spectra of quasi-2D perovskites with control of n values by adjustments of optical spacing molecule concentration^[56]. Copyright © 2018, Springer Nature. (d) Schematic diagram of energy transfer in a quasi-2D perovskite film with mixed n values^[45]. Copyright © 2019, Springer Nature. Operational stability of blue PeLEDs based on quasi-2D perovskite with (e) single halide composition^[44] and (f) mixed halide composition^[52]. Copyright © 2019 and 2020, Springer Nature.

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Fig. 3. (Color online) (a) Surface images of bulk (3D) perovskite with varying Cl contents in the film and (b) corresponding PL spectra of bulk perovskites^[60]. Copyright © 2015, American Chemical Society. EL spectra operated under different applied voltages of the blue PeLEDs based on the (c) single A site perovskite (CsPbX₃)^[65] and (d) triple A site perovskite ((Cs/MA/FA)PbX₃)^[61]. Copyright © 2021, American Chemical Society. Copyright © 2017, John Wiley and Sons.

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Fig. 4. (Color online) (a) Energy levels of various charge transport/ injection layer materials with blue emissive perovskite. (b) TFB/PFI bilayer structure strategy to reduce hole injection barrier^[72]. Copyright © 2018, John Wiley and Sons. (c) Dipole assisted energy level tuning strategy to reduce hole injection barrier^[75]. Copyright © 2019, John Wiley and Sons. (d) Interfacial engineering with thin insulating layer to prevent leakage current^[62]. Copyright © 2020, American Chemical Society.

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Type	Perovskite formation	Emission peak (nm)	L_max (cd/m²)	EQE (%)	Ref
Nanocrystal	CsPb(Br_0.75/Cl_0.25)₃	452	742	0.07	[25]
	CsPb(Br/Cl)₃	490	35	1.9	[28]
	CsPb(Br_0.7/Cl_0.3)₃	461	318	1.2	[30]
	CsPb(Br/Cl)₃	496	603	2.6	[34]
	CsPb(Br_0.59/Cl_0.41)₃	471	465	6.3	[35]
	CsPbBr₃	479	250	12.3	[18]
Quasi-2D	OLA₂MA₂Pb₃Br₁₀	456	1	0.024	[46]
	PEOA₂MA_n–1Pb_nBr_3n+1 (n= 1, 2, 3)	480, 494, 508	19	1.1	[48]
	EA₂MA_n–1Pb_nBr_3n+1	473, 485	100	2.6	[49]
	(PEA/GA)₂Cs_n–1Pb_nBr_3n+1	492	1003	8.2	[51]
	PEA₂(Cs_1–xEA_xPbBr₃)₂PbBr₄	488	2191	12.1	[52]
	(PEA/DPPA)₂Cs_n–1Pb_n(Br_0.67/Cl_0.33) _3n+1(n> 3)	473	482	8.8	[53]
3D	MAPb(Br_0.36/Cl_0.64)₃	482	2	0.0001	[58]
	(Cs/MA/FA)Pb(Br_0.5/Cl_0.5)₃	475	3567	1.7	[61]
	(Cs/Rb/FA/PEA/K)Pb(Br_0.48/Cl_0.48)₃	484	4015	2.01	[62]
	CsPb(Br_0.65/Cl_0.35)₃	482	9352	4.13	[66]
	(Cs/FA)Pb(Br_0.6/Cl_0.4)₃	477	2180	11.0	[63]

Table 1. Recent advances of blue PeLEDs.

Yung Jin Yoon, Jin Young Kim. A recent advances of blue perovskite light emitting diodes for next generation displays[J]. Journal of Semiconductors, 2021, 42(10): 101608

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