Improved electron injection and efficiency in blue organic light-emitting diodes using coupled electric field near cathode

Deng, Lingling; Zhou, Zhijie; Jia, Bolun; Zhou, Hongwei; Peng, Ling; Shang, Wenjuan; Feng, Jing; Chen, Shufen

doi:10.1016/j.orgel.2017.12.004

Cited by 12 publications

(9 citation statements)

References 24 publications

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“…As the absorption coefficients will not change with the light intensity (or electric field), a higher | E | 2 corresponds to more absorption. The plots of electric-field distributions have also been widely employed to represent the effective absorption in both solar cells and other optoelectronic devices. , Because the band edge absorption of amorphous silicon is weak, the incident light with a wavelength over 570 nm could reach to the bottom of the a -Si:H absorber. Therefore, it is crucial to control the effective absorption of the light of longer wavelengths.…”

Section: Resultsmentioning

confidence: 99%

“…An 80 nm thick ITO top transparent electrode was deposited by RF magnetron sputtering. Finally, silver grids were evaporated as the current collector over ITO using a shadow mask. ,, …”

Section: Methodsmentioning

confidence: 99%

“…Finally, silver grids were evaporated as the current collector over ITO using a shadow mask. 15,35,44 4.3. Simulations.…”

Section: Fabrication Of Quasi-periodic Nanodent Arrays On Timentioning

confidence: 99%

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Light Propagation in Flexible Thin-Film Amorphous Silicon Solar Cells with Nanotextured Metal Back Reflectors

Cao

Lin

et al. 2020

ACS Appl. Mater. Interfaces

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Nanostructured metal back reflectors (BRs) are playing an important role in thin-film solar cells, which facilitates an increased optical path length within a relatively thin absorbing layer. In this study, three nanotextured plasmonic metal (copper, gold, and silver) BRs underneath flexible thin-film amorphous silicon solar cells are systematically investigated. The solar cells with BRs demonstrate an excellent light harvesting capability in the long-wavelength region. With the combination of hybrid cavity resonances, horizontal modes, and surface plasmonic resonances, more incident light is coupled into the photoactive layer. Compared to the reference cells, the three devices with plasmonic BRs show lower parasitic absorptions with different individual absorption distributions. Both experimental and simulated results indicate that the silver BR cells delivered the best performance with a promising power conversion efficiency of 7.26%. These rational designs of light harvesting nanostructures provide guidelines for high-performance thin-film solar cells and other optoelectronic devices.

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Section: Resultsmentioning

confidence: 99%

“…An 80 nm thick ITO top transparent electrode was deposited by RF magnetron sputtering. Finally, silver grids were evaporated as the current collector over ITO using a shadow mask. ,, …”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Light Propagation in Flexible Thin-Film Amorphous Silicon Solar Cells with Nanotextured Metal Back Reflectors

Cao

Lin

et al. 2020

ACS Appl. Mater. Interfaces

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“…Except for introduction of metal NPs into hole functional layer, the metal NPs are also expected to show similar effects when incorporated into the electron functional layer. [ 63–67 ] Liao et al. reported a LSPR enhanced blue OLED by inserting Ag NPs into Bphen electron transport layer (ETL) (Figure 4h), [ 63 ] and as a result, an 18% current efficiency improvement was achieved owing to the effective energy transfer between excitons and LSPR (Figure 4i).…”

Section: Various Roles Of Nps In Oledsmentioning

confidence: 99%

Toward High Efficiency Organic Light‐Emitting Diodes: Role of Nanoparticles

Zhang

Sun

2021

Advanced Optical Materials

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The rapid development of nanotechnology for the last 30 years has enabled a rapid expansion in the applications of functional nanoparticles (NPs) on optoelectronic devices. Especially, NPs are of high significance in organic light‐emitting diodes (OLEDs) as they provide feasible solutions to the enduring challenges related to higher device efficiency. The use of NPs with designed structure and functionality is demonstrated, indicative of their great application potentials in OLEDs. Herein, the recent advances in OLEDs with the utilization of functional NPs are summarized. Starting with a brief overview about the unique properties of NPs, comprehensive roles of NPs in OLEDs, which include improving carrier injection abilities, local surface plasmonic resonance, light scattering, and magnetic field effects, are discussed together with their latest research progresses. Furthermore, one‐component and multicomponent heterostructured NPs with multifunctional capabilities in OLEDs are overviewed. Following the summarization of the roles of NPs in OLEDs and their latest research progress, a brief conclusion and outlook regarding the future research directions of highly efficient OLEDs by incorporation of NPs are provided.

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“…Alkaline earths and aluminum alloys are the most popular electron injection materials. The oxides or fluorides of these metals can effectively improve electron injection efficiency, namely, Li2O, Al2O3, CsCO3, and CsF [16][17][18][19][20][21][22].…”

Section: Electron Injection Materialsmentioning

confidence: 99%

Electroluminescent Polymer Materials and Their Applications

Tao¹,

Li²,

Li³

et al. 2021

ACSM

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This paper mainly introduces the light-emitting mechanism, preparation technology, and application status of electroluminescent polymer materials. As an important category of conductive polymer, electroluminescent polymer materials are also known as organic electroluminescent (EL) diode materials or organic light-emitting diode (OLED) materials. Compared with traditional display materials and devices, OLED materials boast a high light-emitting efficiency, an easily adjustable wavelength, a long service life, and an excellent machining performance. In the light of these advantages, this paper summarizes the progresses and future trends of OLED materials and devices in green lighting and panel display.

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Improved electron injection and efficiency in blue organic light-emitting diodes using coupled electric field near cathode

Cited by 12 publications

References 24 publications

Light Propagation in Flexible Thin-Film Amorphous Silicon Solar Cells with Nanotextured Metal Back Reflectors

Light Propagation in Flexible Thin-Film Amorphous Silicon Solar Cells with Nanotextured Metal Back Reflectors

Toward High Efficiency Organic Light‐Emitting Diodes: Role of Nanoparticles

Electroluminescent Polymer Materials and Their Applications

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