Novel approaches for energy efficient solid state lighting by RGB organic light emitting diodes – A review

Thejokalyani, N.; Dhoble, S.J.

doi:10.1016/j.rser.2014.01.013

Cited by 162 publications

(91 citation statements)

References 167 publications

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“…The digital display market is being revolutionized following breakthroughs in OLED technology, with the emergence of commercialized smartphone, television and tablet products incorporating OLED displays [1,2,159,160]. Reports of lightweight, high-efficiency OLEDs fabricated on flexible, plastic substrates open the door to a wider range of next generation display applications relative to traditional flat panel displays that utilize liquid crystal display (LCD) technology [161].…”

Section: Organic Light-emitting Diodes (Oleds)mentioning

confidence: 99%

“…The device architecture of solution-processed, multilayer, bottom-emitting, phosphorescent green OLEDs from the earlier study is illustrated in figure 14 [63]. Meanwhile, figure 15 Despite the much promising achievements, however, solution-processed OLEDs incorporating CuSCN as the HIL/HTL are yet unable to compete with state-of-the-art vacuum-processed OLEDs [160,169]. It is certain however that further optimization of solution-processable interlayer technologies based on CuSCN, as well as other materials systems, is expected to improve the efficiency of solution-processed OLEDs, and potentially enable use of the technology in a range of inexpensive lighting applications.…”

Section: Oleds With Cuscn Hole-transporting / Electron Blocking Inlayersmentioning

confidence: 99%

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Copper(I) thiocyanate (CuSCN) as a hole-transport material for large-area opto/electronics

Wijeyasinghe

Anthopoulos

2015

Semicond. Sci. Technol.

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Recent advances in large-area optoelectronics research have demonstrated the tremendous potential of copper(I) thiocyanate (CuSCN) as a universal hole-transport interlayer material for numerous applications, including, transparent thin-film transistors, high-efficiency organic and hybrid organicinorganic photovoltaic cells, and organic light-emitting diodes (OLEDs). CuSCN combines intrinsic hole-transport (p-type) characteristics with a large bandgap (>3.5 eV) which facilitates optical transparency across the visible to near infrared part of the electromagnetic spectrum. Furthermore, CuSCN is readily available from commercial sources while it is inexpensive and can be processed at low-temperatures using solution-based techniques. This unique combination of desirable characteristics makes CuSCN a promising material for application in emerging large-area optoelectronics. In this review article, we outline some important properties of CuSCN and examine its use in the fabrication of potentially low-cost optoelectronic devices. The merits of using CuSCN in numerous emerging applications as an alternative to conventional hole-transport materials are also discussed.

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Section: Organic Light-emitting Diodes (Oleds)mentioning

confidence: 99%

Section: Oleds With Cuscn Hole-transporting / Electron Blocking Inlayersmentioning

confidence: 99%

Copper(I) thiocyanate (CuSCN) as a hole-transport material for large-area opto/electronics

Wijeyasinghe

Anthopoulos

2015

Semicond. Sci. Technol.

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“…Synthesis of the fluorene derivative monomer 4,7-bis[2-(9,9-dimethyl)fluorenyl] benzo [1,2,5] thiadiazole and its cross-conjugated polymer (PF-1) were reported elsewhere [32]. The molecular structure of PF-1 and the PLED architecture are shown in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Light Emission Properties of a Cross-Conjugated Fluorene Polymer: Demonstration of Its Use in Electro-Luminescence and Lasing Devices

et al. 2016

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Light emission properties of a fluorene cross-conjugated polymer (PF-1) based on the monomer 4,7-bis[2-(9,9-dimethyl)fluorenyl] benzo[1,2,5]thiadiazole are reported. This polymer exhibits solubility at high concentrations, good processability into thin solid films of good quality and a broad emission band with a fluorescence quantum yield of approximately 1. Based on these features, in this paper we implemented the use of PF-1 as an active layer in polymer light-emitting diodes (PLEDs) and as a laser gain medium in solution. To get insight on the conducting properties of PF-1, two different electron injectors, poly [(9,9-bis(3 1 -(N,N-dimethylamino) propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] (PFN) and lithium fluoride (LiF), were used in a simple PLED architecture. PLEDs with the PFN film were found to exhibit better performance with a maximum luminous efficiency of 40 cd/A, a turn-on voltage (V on ) of approximately 4.5 V and a luminance maximum of 878 cd/m 2 at 5.5 V, with a current density of 20 A/m 2 . For the lasing properties of PF-1, we found a lasing threshold of around 75 µJ and a tunability of 20 nm. These values are comparable with those of rhodamine 6G, a well-known laser dye.

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“…Primarily we had an interest to measure values of energy levels of HOMO, LUMO and optical band gap energy (E g_opt ) according to their relevance to the device design [15]. Values of the HOMO energy level were obtained by UV photoelectron spectroscopy in an air method [16] described in instrumentation section (Supplementary information part).…”

Section: Measurements Of Values Of the Homo And The Lumo Energy Levelsmentioning

confidence: 99%

Luminescent benzo- and naphthoquinolines: Synthesis and investigation of photophysical properties

Visniakova

Urbanavičiūtė

Daukšaitė

et al. 2015

Journal of Luminescence

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Novel approaches for energy efficient solid state lighting by RGB organic light emitting diodes – A review

Cited by 162 publications

References 167 publications

Copper(I) thiocyanate (CuSCN) as a hole-transport material for large-area opto/electronics

Copper(I) thiocyanate (CuSCN) as a hole-transport material for large-area opto/electronics

Light Emission Properties of a Cross-Conjugated Fluorene Polymer: Demonstration of Its Use in Electro-Luminescence and Lasing Devices

Luminescent benzo- and naphthoquinolines: Synthesis and investigation of photophysical properties

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