Nanocrystalline copper iodide enabling high-efficiency organic LEDs

Choudhury, Alok; Nagar, Mangey Ram; The, Luke; Lin, Yun-Jie; Liang, Yuhong; Chen, Sun-Zen; Jou, Jwo‐Huei

doi:10.1016/j.orgel.2022.106668

Cited by 3 publications

(1 citation statement)

References 53 publications

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“…In 2022, A. Choudhur et al used nanocrystalline copper iodide (CuI) as a holeinjection and -transport material for the fabrication of organic LEDs [59]. They compared the performance of the new LED based on nanocrystalline CuI with an amorphous and PEDOT:PSS-based device.…”

Section: Spin Coatingmentioning

confidence: 99%

Copper(I) Iodide Thin Films: Deposition Methods and Hole-Transporting Performance

Jamshidi,

Gardner

2024

Molecules

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The pursuit of p-type semiconductors has garnered considerable attention in academia and industry. Among the potential candidates, copper iodide (CuI) stands out as a highly promising p-type material due to its conductivity, cost-effectiveness, and low environmental impact. CuI can be employed to create thin films with >80% transparency within the visible range (400–750 nm) and utilizing various low-temperature, scalable deposition techniques. This review summarizes the deposition techniques for CuI as a hole-transport material and their performance in perovskite solar cells, thin-film transistors, and light-emitting diodes using diverse processing methods. The preparation methods of making thin films are divided into two categories: wet and neat methods. The advancements in CuI as a hole-transporting material and interface engineering techniques hold promising implications for the continued development of such devices.

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Section: Spin Coatingmentioning

confidence: 99%

Copper(I) Iodide Thin Films: Deposition Methods and Hole-Transporting Performance

Jamshidi,

Gardner

2024

Molecules

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Ultra Broad‐Band Excitable Organic–Inorganic Copper(I) Halides: Large‐Scale Synthesis, Outstanding Stability, and Highly Efficient White Light‐Emitting Diodes Application

Xie,

Liu,

Yang

et al. 2024

Advanced Optical Materials

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Organic–inorganic copper(I) halides (OICHs) have recently attracted great attentions for their unique optoelectronic properties. However, most of them have poor stability and narrow excitation in UV region, which seriously hinder their applications in efficient white light‐emitting diodes (WLEDs). Herein, 0D (C19H18P)2Cu4I6 with super broad‐band excitation (300–500 nm) and yellow emission with the absolute photoluminescence quantum yield of 87.4% is synthesized in a quantity of gram scale. Specifically, (C19H18P)2Cu4I6 possesses exceptional thermal‐, photo‐, air‐stability, and can maintain efficient emission even if soaked in water, ethyl acetate, and isopropanol over 30 days. WLEDs with remarkable color stability under various driven currents are fabricated using 450, 400, 365, and 310 nm LED chips. The ideal WLEDs based on single (C19H18P)2Cu4I6 by 450 nm LED chip presents high color rendering index of 86.7, and outstanding luminous efficiency of 90 lm W−1. To the best of the knowledge, this is the highest value that is achieved based on single‐component OICHs using blue light chip. This work not only promotes the prospect of OICHs in WLEDs but also significantly broadens their application in special lighting fields, such as underwater illumination.

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Transparent p-type copper iodide for next-generation electronics: fundamental physics and recent research trends

Kim,

Lee,

Ahn

et al. 2024

Soft Sci

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Development of transparent and flexible p -type semiconductors has been a significant challenge for scientific curiosity and industrial interest. Unlike n -type metal oxide semiconductors, such as zinc oxide (ZnO), In2O3, and SnO2, transparent p -type oxide semiconductors have suffered from low optical transparency and poor electrical performance. To overcome the intrinsic limitation of p -type oxide semiconductors, copper iodide (CuI) is gaining attention as a multifunctional p -type semiconductor with excellent optical transparency, decent mechanical flexibility, high hole mobility, high electrical conductivity, and even promising thermoelectric performance. Here, we present the recent progress of CuI-based transparent p -type electronics from materials to applications. In this review, we summarize the physical and chemical properties of CuI by reviewing computational studies, focusing on the band structure, intrinsic defects, and promising dopants. Additionally, various applications of CuI, including its use as active layers, hole transport layers (HTLs), transparent electrodes, and energy harvesters, are examined, highlighting important studies and their findings. Strategies to enhance device performance, such as controlling carrier concentrations and refining fabrication methods, are discussed, offering insights for developing next-generation electronic devices. Finally, we discuss current challenges and perspective opportunities of CuI-based transparent p -type electronics.

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Nanocrystalline copper iodide enabling high-efficiency organic LEDs

Cited by 3 publications

References 53 publications

Copper(I) Iodide Thin Films: Deposition Methods and Hole-Transporting Performance

Copper(I) Iodide Thin Films: Deposition Methods and Hole-Transporting Performance

Ultra Broad‐Band Excitable Organic–Inorganic Copper(I) Halides: Large‐Scale Synthesis, Outstanding Stability, and Highly Efficient White Light‐Emitting Diodes Application

Transparent p-type copper iodide for next-generation electronics: fundamental physics and recent research trends

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