Highly efficient fluorescent and hybrid white organic light-emitting diodes based on a bimolecular excited system

Erdong Zhang; Cong Chen; Wencheng Zhao; Duxu Yan; Jihua Tang; Jintao Wang; Ping Chen; Ren Sheng; Ren Sheng

doi:10.1364/OL.506371

Optics Letters
Vol. 48,
Issue 21,
pp. 5771-5774
(2023)
•https://doi.org/10.1364/OL.506371

Highly efficient fluorescent and hybrid white organic light-emitting diodes based on a bimolecular excited system

Erdong Zhang, Cong Chen, Wencheng Zhao, Duxu Yan, Jihua Tang, Jintao Wang, Ping Chen, and Ren Sheng

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Erdong Zhang, Cong Chen, Wencheng Zhao, Duxu Yan, Jihua Tang, Jintao Wang, Ping Chen, and Ren Sheng, "Highly efficient fluorescent and hybrid white organic light-emitting diodes based on a bimolecular excited system," Opt. Lett. 48, 5771-5774 (2023)

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Abstract

A bimolecular excited system is considered as a promising candidate for developing white organic light-emitting diodes (WOLEDs) with reduced phosphorescent components. However, for actualizing high-performance WOLED, little attention has been paid to electromers compared to exciplexes. Herein, we construct the bimolecular excited system to prepare fluorescent WOLEDs by combining the electromer emission with the exciplex emission, achieving a maximum power efficiency of 11.8 lm/W with a color rendering index (CRI) of over 80. Furthermore, phosphorescent dopants are doped into an exciplex host to construct hybrid WOLEDs. The fabricated complementary-color and three-color devices achieve maximum efficiencies of 55.3 cd/A (46.8 lm/W) and 34.1 cd/A (26.8 lm/W), respectively. The spectral coverages of WOLEDs are broadened by the bimolecular excited system, and CRIs are further improved at high luminance. Our strategy may bring light to the future development of highly efficient WOLEDs with economy and sustainability.

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Corrections

Erdong Zhang, Cong Chen, Wencheng Zhao, Duxu Yan, Jihua Tang, Jintao Wang, Ping Chen, and Ren Sheng, "Highly efficient fluorescent and hybrid white organic light-emitting diodes based on a bimolecular excited system: publisher’s note," Opt. Lett. 49, 1928-1928 (2024)
https://opg.optica.org/ol/abstract.cfm?uri=ol-49-8-1928

26 March 2024: A typographical correction was made to the affiliations.

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Supplementary Material (1)

Name	Description
Supplement 1	Supporting Information

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Device	V_on	PE_max/1000	CE_max/1000	CIE	CT	CRI
W₂₁	2.76	11.8/2.3	11.3/4.3	(0.33,0.38)	5616	81
W₂₂	2.81	11.0/1.0	10.5/2.2	(0.30,0.30)	7698	83
W₂₃	3.14	9.1/0.6	8.7/1.6	(0.31,0.30)	6936	84
W₃₁	2.85	46.8/23.7	55.3/36.9	(0.47,0.49)	3053	52
W₃₂	2.92	37.3/11.4	44.6/21.0	(0.44,0.46)	3308	56
W₃₃	3.22	20.1/1.7	23.9/4.3	(0.35,0.35)	4798	68
W₄₁	2.65	26.8/6.1	34.1/13.3	(0.44,0.40)	2831	67
W₄₂	2.68	19.3/5.4	26.2/12.1	(0.42,0.41)	3301	65
W₄₃	2.76	14.7/4.6	21.1/10.6	(0.46,0.40)	2503	61

	Device	V_on (V)	PE_max (lm/W)	CE_max (cd/A)	CIE
dye-free	W₂₁	2.8	11.8	11.3	(0.33,0.41)
	Ref. [19]	-	11.3	16.2	(0.31,0.37)
	Ref. [20]	4.6	11.5	25.4	(0.41,0.44)
	Ref. [3]	3.7	3.9	4.8	(0.28,0.33)
	Ref. [21]	3.3	11.6	13.8	(0.35,0.40)
	Ref. [22]	3.0	4.0	4.2	(0.38,0.41)
hybrid	W₃₁	2.9	46.8	55.3	(0.47,0.49)
	W₃₂	2.9	37.3	44.6	(0.44,0.46)
	Ref. [23]	3.2	29.6	42.5	(0.46,0.43)
	Ref. [24]	-	19.0	17.8	(0.49,0.42)
	Ref. [25]	2.5	27.5	-	(0.50,0.42)
	Ref. [26]	-	35.4	30.6	(0.41,0.48)
	Ref. [27]	6.8	19.1	41.5	-

Device	V_on	PE_max/1000	CE_max/1000	CIE	CT	CRI
W₂₁	2.76	11.8/2.3	11.3/4.3	(0.33,0.38)	5616	81
W₂₂	2.81	11.0/1.0	10.5/2.2	(0.30,0.30)	7698	83
W₂₃	3.14	9.1/0.6	8.7/1.6	(0.31,0.30)	6936	84
W₃₁	2.85	46.8/23.7	55.3/36.9	(0.47,0.49)	3053	52
W₃₂	2.92	37.3/11.4	44.6/21.0	(0.44,0.46)	3308	56
W₃₃	3.22	20.1/1.7	23.9/4.3	(0.35,0.35)	4798	68
W₄₁	2.65	26.8/6.1	34.1/13.3	(0.44,0.40)	2831	67
W₄₂	2.68	19.3/5.4	26.2/12.1	(0.42,0.41)	3301	65
W₄₃	2.76	14.7/4.6	21.1/10.6	(0.46,0.40)	2503	61

	Device	V_on (V)	PE_max (lm/W)	CE_max (cd/A)	CIE
dye-free	W₂₁	2.8	11.8	11.3	(0.33,0.41)
	Ref. [19]	-	11.3	16.2	(0.31,0.37)
	Ref. [20]	4.6	11.5	25.4	(0.41,0.44)
	Ref. [3]	3.7	3.9	4.8	(0.28,0.33)
	Ref. [21]	3.3	11.6	13.8	(0.35,0.40)
	Ref. [22]	3.0	4.0	4.2	(0.38,0.41)
hybrid	W₃₁	2.9	46.8	55.3	(0.47,0.49)
	W₃₂	2.9	37.3	44.6	(0.44,0.46)
	Ref. [23]	3.2	29.6	42.5	(0.46,0.43)
	Ref. [24]	-	19.0	17.8	(0.49,0.42)
	Ref. [25]	2.5	27.5	-	(0.50,0.42)
	Ref. [26]	-	35.4	30.6	(0.41,0.48)
	Ref. [27]	6.8	19.1	41.5	-

Abstract

Corrections

Supplementary Material (1)

Data availability

Cited By

Figures (4)

Tables (2)

Optics Letters