Enhanced Performance Organic Light Emitting Diode With CuI:CuPC Composite Hole Transport Layer

Mohan, Vinay; Gautam, Akash; Choudhary, Surya Deo; Bee, M. K. Mariam; Puviarasi, R.; Saranya, S.; Agrawal, Niraj

doi:10.1109/tnano.2020.3019096

Cited by 10 publications

(5 citation statements)

References 37 publications

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“…The current efficiency of the device is achieved as 42.3 cdA −1 . Additionally, Mohan et al 104 incorporated CuI as dopants into CuPC to refine HTL and attained current efficiency as 70 cdA −1 . Thereafter, Lu et al 91 designed some conventional devices utilizing chiral complexes as dopants.…”

Section: Characteristics Parameters For Oledmentioning

confidence: 99%

“…The maximum luminous efficiency is reported as 68.9 lmW −1 at 60 °C. Furthermore, in 2022, a highly efficient device with the power efficiency of 74.1 lmW −1 was proposed by Mohan et al 104 In this device, CuI as dopants was added into CuPC to enhance hole transport layer [HTL]. Recently in 2023, Qi et al 110 presented a DNM (Dielectric-Nano mesh)-OLED device with the peak power efficiency of 7.7 lmW −1 which is 1.8 times improved as compared with ITO-OLED.…”

Section: Characteristics Parameters For Oledmentioning

confidence: 99%

“…On the other hand, the enhanced hole transport improved the properties of OLEDs with 3-methylphenylphenylamino because of good charge transfer formation. Further, Mohan et al 104 explored the effect of doping on the performance of OLED by mixing copper iodide into copper phthalocyanine hole transport layer. They reported that when CuI is doped into CuPC, it increases the performance OLED.…”

Section: Multi-layered Oled Structuresmentioning

confidence: 99%

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Review—Advancements and Perspectives of Organic LED: In Depth Analysis of Architectural Design, Characteristics Parameters, Fabrication Techniques, and Applications

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Mittal

Negi

2023

ECS J. Solid State Sci. Technol.

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This article presents a review on various aspect of organic light emitting diodes (OLEDs), such as their working, various categorization, impact of fabrication methodologies (organic vapor phase deposition, vacuum thermal evaporation, inkjet printing etc.) that are low-cost and their applications in serval domains like medical, sensor, display, lighting etc. Three categorizations of OLED are discussed with respect to circuit, architecture and color of emission. Different layers of multi-layered structures such as injection layer, transport layer, block layers are also reviewed and their impacts are analyzed and compared. Moreover, an experimental fabrication technique for flexible substrate is reviewed that highlights low-cost fabrication method. In this technique, dynamic viscosity and contact angle are measured using rotational viscometer and contact angle meter, respectively. The result illustrates sheet resistance and effective opening ratio of 3.8 ohms per square and 82.5%, correspondingly. Additionally, various performance parameters like luminescence, external quantum efficiency, and current efficiency are compared. The paper also incorporates recent advancement in organic thin film transistors along with some OTFT driven OLED devices.

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Section: Characteristics Parameters For Oledmentioning

confidence: 99%

Section: Characteristics Parameters For Oledmentioning

confidence: 99%

Section: Multi-layered Oled Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Review—Advancements and Perspectives of Organic LED: In Depth Analysis of Architectural Design, Characteristics Parameters, Fabrication Techniques, and Applications

Yadav

Mittal

Negi

2023

ECS J. Solid State Sci. Technol.

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“…Copper phthalocyanine (CuPc) is a well-studied small-molecule organic semiconducting material. Traditionally, it has been used as an industrial dye or pigment, but over the last decades it has also been studied as an active material in light-emitting diodes, 38 photovoltaic cells, 39 and temperature sensors. 40 As with other phthalocyanine complexes, CuPc has multiple crystalline polymorphs, including the α-, β-, γ-, and χ-polymorphs.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Thermometry of Plasmonic Structures via Raman Shifts in Copper Phthalocyanine

Askes

Rosendo

et al. 2023

J. Phys. Chem. C

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Temperature measurements at the nanoscale are vital for the application of plasmonic structures in medical photothermal therapy and materials science but very challenging to realize in practice. In this work, we exploit a combination of surface-enhanced Raman spectroscopy together with the characteristic temperature dependence of the Raman peak maxima observed in β-phase copper phthalocyanine (β-CuPc) to measure the surface temperature of plasmonic gold nanoparticles under laser irradiation. We begin by measuring the temperature-dependent Raman shifts of the three most prominent modes of β-CuPc films coated on an array of Au nanodisks over a temperature range of 100−500 K. We then use these calibration curves to determine the temperature of an array of Au nanodisks irradiated with varying laser powers. The extracted temperatures agree quantitatively with the ones obtained via numerical modeling of electromagnetic and thermodynamic properties of the irradiated array. Thin films of β-CuPc display low extinction coefficients in the blue-green region of the visible spectrum as well as exceptional thermal stability, allowing a wide temperature range of operation of our Raman thermometer, with minimal optical distortion of the underlying structures. Thanks to the strong thermal response of the Raman shifts in β-CuPc, our work opens the opportunity to investigate photothermal effects at the nanoscale in real time.

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“…These show that a CuI hole-transporter not only enhances the power conversion efficiency but also improves charge extraction and stability. CuI has also been used as a hole selective contact in light-emitting diodes [ 25 , 26 , 27 , 28 ]. Moreover, CuI is economical and chemically stable and has high hole mobility, with a suitable energy level with CdTe and the back electrode.…”

Section: Introductionmentioning

confidence: 99%

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

et al. 2022

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This study focuses on fabricating efficient CdS/CdTe thin-film solar cells with thermally evaporated cuprous iodide (CuI) as hole-transporting material (HTM) by replacing Cu back contact in conventional CdS/CdTe solar cells to avoid Cu diffusion. In this study, a simple thermal evaporation method was used for the CuI deposition. The current-voltage characteristic of devices with CuI films of thickness 5 nm to 30 nm was examined under illuminations of 100 mW/cm2 (1 sun) with an Air Mass (AM) of 1.5 filter. A CdS/CdTe solar cell device with thermally evaporated CuI/Au showed power conversion efficiency (PCE) of 6.92% with JSC, VOC, and FF of 21.98 mA/cm2, 0.64 V, and 0.49 under optimized fabrication conditions. Moreover, stability studies show that fabricated CdS/CdTe thin-film solar cells with CuI hole-transporters have better stability than CdS/CdTe thin-film solar cells with Cu/Au back contacts. The significant increase in FF and, hence, PCE, and the stability of CdS/CdTe solar cells with CuI, reveals that Cu diffusion could be avoided by replacing Cu with CuI, which provides good band alignment with CdTe, as confirmed by XPS. Such an electronic band structure alignment allows smooth hole transport from CdTe to CuI, which acts as an electron reflector. Hence, CuI is a promising alternative stable hole-transporter for CdS/CdTe thin-film solar cells that increases the PCE and stability.

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Enhanced Performance Organic Light Emitting Diode With CuI:CuPC Composite Hole Transport Layer

Cited by 10 publications

References 37 publications

Review—Advancements and Perspectives of Organic LED: In Depth Analysis of Architectural Design, Characteristics Parameters, Fabrication Techniques, and Applications

Review—Advancements and Perspectives of Organic LED: In Depth Analysis of Architectural Design, Characteristics Parameters, Fabrication Techniques, and Applications

Nanoscale Thermometry of Plasmonic Structures via Raman Shifts in Copper Phthalocyanine

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

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