1. Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2. University of Science and Technology of China, Hefei 230026, China; 3. Institute of Plasma Physics, Chinese Academy of Sciences, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 4. Physics Department, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China; 5. High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 6. Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing 210093, China
Abstract Development of p-type transparent conducting thin films is tireless due to the trade-off issue between optical transparency and conductivity. The rarely concerned low normal state resistance makes Bi-based superconducting cuprates the potential hole-type transparent conductors, which have been realized in Bi2Sr2CaCu2Oy thin films. In this study, epitaxial superconducting Bi2Sr2CuOy and Bi2Sr1.8Nd0.2CuOy thin films with superior normal state conductivity are proposed as p-type transparent conductors. It is found that the Bi2Sr1.8Nd0.2CuOy thin film with thickness 15 nm shows an average visible transmittance of 65% and room-temperature sheet resistance of 650 Ω/sq. The results further demonstrate that Bi-based cuprate superconductors can be regarded as potential p-type transparent conductors for future optoelectronic applications.
Chen Zhou(周臣), Wang-Ping Cheng(程王平), Yuan-Di He(何媛娣), Cheng Shao(邵成), Ling Hu(胡令), Ren-Huai Wei(魏仁怀), Jing-Gang Qin(秦经刚), Wen-Hai Song(宋文海), Xue-Bin Zhu(朱雪斌), Chuan-Bing Cai(蔡传兵), and Yu-Ping Sun(孙玉平) Epitaxial Bi2Sr2CuOy thin films as p-type transparent conductors 2022 Chin. Phys. B 31 107305
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