Article
Materials Science, Multidisciplinary
Michael Seifert, Moemi Kawashima, Claudia Roedl, Silvana Botti
Summary: Zinc blende copper iodide, a p-type semiconductor transparent in the visible range, has potential for transparent electronics, with the layered beta-phase being suitable for 2D applications. Both phases exhibit small light-hole effective masses and large band gaps, characteristics that are also present in the beta-CuI monolayer, indicating the potential for a high-performance transparent monolayer conductor for 2D electronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Pablo Darnige, Yohann Thimont, Lionel Presmanes, Antoine Barnabe
Summary: In this study, the thermal stability of gamma-CuI thin films was investigated. Post deposition annealing at different temperatures under argon and air atmospheres was conducted to stabilize and optimize the optoelectronic and thermoelectric performances of the material. The experiments revealed that annealing under argon at 300 ? followed by air at 150 ? achieved the best electrical conductivity and p-type degenerative semiconductor behavior of the gamma-CuI thin films. A new coefficient of performance for transparent thermoelectric materials (COPTTE) was proposed and calculated to be 8.3 x 10(-12) A(2) m(-1) K-2 at room temperature for the stabilized gamma-CuI thin film.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
O. Madkhali, M. Jullien, Alaa E. Giba, J. Ghanbaja, S. Mathieu, C. Gendarme, S. Migot, Y. Alajlani, N. Can, F. Alnjiman, D. Horwat, A. Redjaimia, J. F. Pierson
Summary: Copper iodide is a transparent p-type material with a zinc blende structure, exhibiting p-type carrier behavior. Detailed investigation using HR-TEM revealed alternating twin crystallographic domains between grains. The optical properties show a wide band gap and blue emission.
SURFACES AND INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Ao Liu, Huihui Zhu, Myung-Gil Kim, Junghwan Kim, Yong-Young Noh
Summary: This paper discusses the potential of CuI as a promising p-type material in various devices, including transparent electrodes, thermoelectric devices, p-n diodes, transistors, light emitting diodes, and solar cells. The focus is on the electronic structure and defect states of CuI, as well as the design concepts for adjusting its optoelectrical properties through different approaches.
Article
Chemistry, Physical
Chien-Yie Tsay, Yun-Chi Chen, Hsuan-Meng Tsai, Phongsaphak Sittimart, Tsuyoshi Yoshitake
Summary: Pure CuI and Zn-substituted CuI semiconductor thin films and photodetectors were fabricated by a low-temperature solution process. The inclusion of Zn ions improved the crystallinity and electrical conductivity of CuI thin films, resulting in enhanced optoelectronic performance of CuI MSM photodetectors.
Article
Chemistry, Multidisciplinary
Alexander Weiss, Jacqueline Goldmann, Sakari Kettunen, Georgi Popov, Tomi Iivonen, Miika Mattinen, Pasi Jalkanen, Timo Hatanpaa, Markku Leskela, Mikko Ritala, Marianna Kemell
Summary: This study demonstrates a scalable and conformal deposition of copper iodide (CuI) thin films using atomic layer deposition (ALD). The two-step ALD process, involving deposition of CuO and subsequent conversion to CuI using HI vapor, results in phase-pure, uniform, and high-purity CuI films. The successful deposition of CuI on various substrates and its application in diode structures and perovskite solar cells suggests that the ALD-based approach offers a viable alternative for depositing transparent conductive p-type CuI thin films in complex high aspect ratio structures and large substrate areas.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Dingrong Liu, Zenghua Cai, Yu-Ning Wu, Shiyou Chen
Summary: In this paper, the formation energies and emission line shapes for various defects in CuI are studied through first-principles simulations. It is discovered that the intrinsic point defect cluster V-I+Cui(2+) is the source of the long wavelength emission. The prediction of a significant reduction in defect concentration as the chemical condition changes supports this finding.
Article
Chemistry, Physical
Christina M. Chang, Luke M. Davis, Eliza K. Spear, Roy G. Gordon
Summary: Copper halides are high-mobility p-type transparent conductors, suitable for thin film optoelectronic devices. Researchers have developed a new CVD method to prepare CuBr thin films, opening up the possibility of a general route for CVD of other metal halides.
CHEMISTRY OF MATERIALS
(2021)
Review
Materials Science, Multidisciplinary
Joe Willis, David O. Scanlon
Summary: Transparent conducting materials are essential in modern opto-electronic devices, offering a combination of optical transparency and electronic conductivity. The market for transparent electronics is projected to grow rapidly, with a focus on developing high-performance p-type TCMs.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Mi Zhong, Wei Zeng, Fu-Sheng Liu, Dai-He Fan, Bin Tang, Qi-Jun Liu
Summary: A screening strategy was formulated to identify promising p-type transparent conducting materials, resulting in the identification of three candidates with excellent properties. Defect calculations provided strong support for the established criterion for assessing p-type performance, indicating potential for further exploration and design of advanced functional materials.
MATERIALS TODAY PHYSICS
(2022)
Article
Physics, Condensed Matter
C. H. Raj Kishor, T. Sreelakshmy, Ankit Das, P. M. Aneesh
Summary: In this study, p-CuI/n-ZnO heterojunctions were fabricated using the solution-processed spin-coating technique. The structural, morphological, and optical properties of the CuI nanostructures, CuI and ZnO thin films were investigated. The results showed the formation of zinc blende gamma-CuI nanostructures and hexagonal wurtzite structure for the CuI and ZnO thin films, respectively. The J-V measurement confirmed the rectifying behavior of the heterojunctions, with a variation in the ideality factor observed at different voltage ranges.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Nanoscience & Nanotechnology
Hee Jun Kim, Sung Pyo Park, Won Kyung Min, Dongwoo Kim, Kyungho Park, Hyun Jae Kim
Summary: Introducing an organic interlayer improved the electrical characteristics of Cu2O thin-film transistors by reducing the Schottky barrier height through the formation of electric dipoles. The research successfully demonstrated the fabrication of a complementary inverter based on n-type indium-gallium-zinc oxide and p-type Cu2O TFTs using only Al electrodes, expanding the options for electrode metals in low-cost circuit design for p-type oxide semiconductor-based electronics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jiawei Lin, Muzi Li, Yisha Wang, Yafang Li, Fan Sun, Xin Chen, Zhongnan Guo, Jing Zhao, Wenxia Yuan
Summary: This study reports the single crystal growth of two new Zn-based chalcogenides, K2Zn3S4 and Rb2Zn3Se4. Experimental and theoretical calculations reveal that both compounds have large band gaps and show potential for being outstanding p-type transparent conducting materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jeong Hyuk Lee, Byeong Hyeon Lee, Jeonghun Kang, Mangesh Diware, Kiseok Jeon, Chaehwan Jeong, Sang Yeol Lee, Kee Hoon Kim
Summary: A transparent p-CuI/n-SiZnSnO (SZTO) heterojunction diode was successfully fabricated, with enhanced performance and improved current rectification ratio after a nitrogen annealing process. Various diode parameters were estimated based on the Shockley diode equation, and an energy band diagram was proposed to explain the diode characteristics.
Article
Physics, Applied
Reiji Okada, Hiroto Isomura, Yoshiki J. Sato, Ryuji Okazaki, Masayuki Inoue, Shinya Yoshioka
Summary: Researchers have fabricated transparent low-layered crystals of a misfit thermoelectric oxide, which exhibite high transparency and low electrical resistivity due to their single-crystalline structure. These materials have a higher figure of merit compared to previous reports and may serve as a unique class of multi-functional transparent thermoelectric oxides.
APPLIED PHYSICS LETTERS
(2023)
