Emission Characteristics of Multi-Tandem OLED using MoO<sub>x</sub>with CGL

Kim, Jihyun; Ju, Sung-Hoo

doi:10.5695/jkise.2015.48.3.105

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Various researchers have studied CGL to re ne the performance of organic LEDs [19][20][21][22][23]. In 2016, Kim et al [24] discussed the emission properties of blue uorescent multi-tandem organic LEDs using CGL of materials Al/MoO x . The maximum quantum e ciency and current e ciency are obtained as 25.6% and 46.6 cd/A, correspondingly.…”

Section: Introductionmentioning

confidence: 99%

Characteristic performance and analysis of the positional variation of the charge generation layer to enhance the performance of OLEDs

Yadav,

Mittal,

Negi

2023

J Comput Electron

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In this paper, a highly e cient charge generation layer (CGL) based blue organic light emitting diode (OLED) is proposed. The proposed device contains a CGL which comprises of two materials 1,1-bis[(di-4tolyamino)phenyl)]cyclohexane (TAPC) and 1,4,5,8,9, which act as hole and electron injectors, correspondingly. The CGL in the proposed device is placed outside of the emissive layer which provides better luminescence and current as compared with four other CGL based devices D 2 , D 3 , D 4 and D 5 where CGL is utilized below cathode, above anode, near both electrodes (cathode and anode) and inside the emissive layer, respectively. The proposed device exhibits noteworthy results as peak values of current and luminescence are achieved as 0.44 A and 3636.3 cd/m 2 , correspondingly. The obtained luminescence is about 16.8, 2.3, 1.7, 3, 1.6 times improved on comparing with D 1 , D 2 , D 3 , D 4 and D 5 . Furthermore, thickness optimization of the proposed device is also outlined.The optimized device showed the maximum luminescence of 4670 cd/m 2 .

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Section: Introductionmentioning

confidence: 99%

Characteristic performance and analysis of the positional variation of the charge generation layer to enhance the performance of OLEDs

Yadav,

Mittal,

Negi

2023

J Comput Electron

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“…Many researchers have investigated CGL to improve the performance of OLEDs. [16][17][18][19] Kim et al 20 explained the emission properties of blue fluorescent multi-tandem OLED using CGL with the materials Al/MoO X . In this research, the current efficiency and maximum quantum efficiency are achieved as 46.6 cd A −1 and 25.6%, respectively.…”

mentioning

confidence: 99%

An In-Depth Analysis of Variation in Characteristic Performance of OLED with Respect to Position of Charge Generation Layer

Yadav,

Mittal,

Negi

2023

ECS J. Solid State Sci. Technol.

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In this paper, a high performance blue organic light emitting diode having a charge generation layer (CGL) is proposed and compared with the other five CGL and non-CGL based devices. The utilized CGL layer in the different structure consists of two materials; HAT-CN (hexaazatriphenylene-hexacarbonitrile) and TAPC (1,1-bis[(di-4-tolyamino)phenyl)]cyclohexane,) for electrons and holes generation, correspondingly. In the proposed novel structure, the CGL layer is incorporated outside of the emissive layer (EML) which significantly enhances the device performance in terms of current and luminescence. The device exhibits luminescence and current values as 3636.3 cd m−2 and 0.44 A, respectively. Furthermore, this paper represents in-depth internal analysis of the six devices (D1-D6). This analysis is provided by drawing horizontal and vertical cutlines inside the devices. The proposed device is analysed and compared with other mentioned devices in terms of several parameters such as Langevin recombination rate, electron concentration, hole concentration, band energy, total current density, electron affinity, hole QFL (quasi-Fermi level), conduction current density, potential distribution and electron/hole mobility. In comparison with D1, D2, D3, D4 and D5, the current of the proposed device (D6) is about 16.9, 2.2, 1.7, 3 and 1.6 times improved, correspondingly. Moreover, structural analysis is also included to understand the performance of the devices more precisely.

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Characteristics performance and analysis of positional variation in charge generation layer to enhance performance of OLED.

Yadav

Mittal

Negi

2023

Preprint

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In this paper, a highly efficient charge generation layer (CGL) based blue organic light emitting diode (OLED) is proposed. The proposed device contains a CGL which comprises of two materials 1,1-bis[(di-4-tolyamino)phenyl)]cyclohexane (TAPC) and 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT-CN) which act as hole and electron injectors, correspondingly. The CGL in the proposed device is placed outside of the emissive layer which provides better luminescence and current as compared with four other CGL based devices D2, D3, D4 and D5 where CGL is utilized below cathode, above anode, near both electrodes (cathode and anode) and inside the emissive layer, respectively. The proposed device exhibits noteworthy results as peak values of current and luminescence are achieved as 0.44 A and 3636.3 cd/m2, correspondingly. The obtained luminescence is about 16.8, 2.3, 1.7, 3, 1.6 times improved on comparing with D1, D2, D3, D4 and D5. Furthermore, thickness optimization of the proposed device is also outlined. The optimized device showed the maximum luminescence of 4670 cd/m2.

show abstract

Emission Characteristics of Multi-Tandem OLED using MoO_xwith CGL

Cited by 4 publications

References 14 publications

Characteristic performance and analysis of the positional variation of the charge generation layer to enhance the performance of OLEDs

Characteristic performance and analysis of the positional variation of the charge generation layer to enhance the performance of OLEDs

An In-Depth Analysis of Variation in Characteristic Performance of OLED with Respect to Position of Charge Generation Layer

Characteristics performance and analysis of positional variation in charge generation layer to enhance performance of OLED.

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Emission Characteristics of Multi-Tandem OLED using MoOxwith CGL

Cited by 4 publications

References 14 publications

Characteristic performance and analysis of the positional variation of the charge generation layer to enhance the performance of OLEDs

Characteristic performance and analysis of the positional variation of the charge generation layer to enhance the performance of OLEDs

An In-Depth Analysis of Variation in Characteristic Performance of OLED with Respect to Position of Charge Generation Layer

Characteristics performance and analysis of positional variation in charge generation layer to enhance performance of OLED.

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Emission Characteristics of Multi-Tandem OLED using MoO_xwith CGL