Improvement of OLED performances by applying annealing and surface treatment on electro-deposited CuSCN hole injection layer

Tsai, Chi Ting; Gottam, Sandeep Reddy; Kao, Po Ching; Perng, Dung Ching; Chu, Sheng Yuan

doi:10.1016/j.synthmet.2020.116537

Cited by 15 publications

(13 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In organic light-emitting diodes (OLEDs), CuSCN has been traditionally used as an HTL to improve the charge injection efficiency. Its high optical transparency suppresses any parasitic absorption of the light generated from the active layer. − In organic and perovskite solar cells (OSCs and PSCs), the CuSCN layer allows the extraction of holes from the photoactive layer, again suppressing any parasitic absorption and allowing the incident radiation of all wavelengths to reach the photoactive layer. − Theoretical studies have linked the advantages of CuSCN as an HTL to its usual lack of any deep carrier trap states and its minimal valence band offset with the archetypal perovskite CH 3 NH 3 PbI 3 . In ultraviolet-based photodetectors (UVPDs), the wide bandgap of CuSCN allows unhindered high absorption in the UV region and could form not only metal–semiconductor–metal (MSM) UVPDs but also p-n junction UVPDs when combined with n -type material. − Finally, CuSCN is one of the few materials for p -channel thin film transistor (TFT) fabrication due to its hole transport selectivity. − …”

mentioning

confidence: 99%

Cl₂-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

et al. 2022

View full text Add to dashboard Cite

Copper(I) thiocyanate (CuSCN) is a wide bandgap and solution-processable p-type semiconductor with tremendous potential for large-area optoelectronic applications. In this work, chlorine-doped CuSCN (Cl2–CuSCN) was utilized to form a hole transport layer (HTL) for different organic solar cells (OSCs) and inverted perovskite solar cells (PSCs). Chlorine doping into CuSCN thin films is found to improve the device performance of different OSCs, to a level comparable to that of PEDOT:PSS-based OSCs. Notably, the inverted PSCs with Cl2–CuSCN showed a better performance than those with pristine CuSCN or PEDOT:PSS-based inverted PSC devices. Moreover, Cl2–CuSCN-based OSCs and PSCs also reveal significantly better stability than pristine CuSCN and PEDOT:PSS-based devices. Our results show how Cl2–CuSCN thin films act as a universally applicable HTL for emerging solar cell technologies, improving both device performance and stability.

show abstract

mentioning

confidence: 99%

Cl₂-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Figure 3 demonstrate the contact angles of water with PEDOT:PSS and PEDOT:PSS/QDs with different concentration are 12.4°, 13.5° and 18.4°, respectively. The small contact angles reveal that the hybrid PEDOT:PSS/QDs HIL has strong hydrophilic and spread-ability, resulting in a better interface and adhesion between anode and hole transporting layer ( Phatak et al, 2012 ; Tsai et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

“…The device with the concentration of 10%MoS 2 QDs in PEDOT:PSS exhibited maximum CE of 72.7 cd A −1 and maximum luminescence of 46,354 cd m −2 with a low turn-on voltage of 3.6 V. We also demonstrate that PEDOT:PSS doped with 10%MoS 2 QDs forms more higher quality film with lower surface roughness, which are beneficial to form a better interface and adhesion between anode and hole transporting layer. ( Phatak et al, 2012 ; Tsai et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

et al. 2021

View full text Add to dashboard Cite

In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

show abstract

“…After a certain lifetime, the exciton pair deexcites by giving photons as light [4]. OLED is a complex device compared to the LED, which is composed of seven active layers (like two charge injection layers, two transport layers, two blocking layers, and one emissive layer) between two electrodes [5][6][7]. The external quantum efficiency of OLED devices depends on the device architecture, outcoupling phenomenon, and the active layer materials [8].…”

Section: Introductionmentioning

confidence: 99%

Thermal states of exfoliated gC3N4 embedded coral-shaped ZrO2 nanoparticles as a robust emissive layer for OLED application

Bauri

Choudhary

2022

Preprint

View full text Add to dashboard Cite

Metal-free graphitic carbon nitride (gC3N4) is proving as a growing star of the carbon nitride family due to its glamorous electrical, optical, and thermal properties. Blending of zirconium oxide (ZrO2) semiconductor with different weight percentage improves the properties of the pure gC3N4. In this work, we used the ultrasonic sound wave method to synthesize gC3N4/ZrO2 nanocomposite. Characterization techniques such as X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HR-TEM), Fourier transforms infrared microscopy (FTIR), UV-visible, and photoluminescence were used to characterize the as-synthesized gC3N4, ZrO2, and gC3N4/ZrO2 nanocomposite. The XRD measurement method confirmed the crystalline nature and determined the average particle size of the composite. Fourier transform infrared (FTIR) spectroscopy was performed to examine the presence of functional groups in synthesized materials. Bandgap energy of 2.98 eV and light absorbed in the range of 250 nm - 450 nm was recorded by UV visible spectroscopy. Photoluminescence spectroscopy revealed photon emission in the range 450 nm -530 nm of the synthesized materials. Dielectric constant, refractive index (n=1.5), and electrical conductivity (2.63 × 10-3 S/cm) were computed using LCR meter and I-V graph. Lower dielectric constant, refractive index, optimized optical band gap energy, and higher electron-hole recombination rate of gC3N4/ZrO2illustrated a successful emissive layer for organic light-emitting diode applications.

show abstract

Improvement of OLED performances by applying annealing and surface treatment on electro-deposited CuSCN hole injection layer

Cited by 15 publications

References 33 publications

Cl₂-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

Cl₂-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

Thermal states of exfoliated gC3N4 embedded coral-shaped ZrO2 nanoparticles as a robust emissive layer for OLED application

Contact Info

Product

Resources

About

Improvement of OLED performances by applying annealing and surface treatment on electro-deposited CuSCN hole injection layer

Cited by 15 publications

References 33 publications

Cl2-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

Cl2-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

Thermal states of exfoliated gC3N4 embedded coral-shaped ZrO2 nanoparticles as a robust emissive layer for OLED application

Contact Info

Product

Resources

About

Cl₂-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability

Cl₂-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability