Transparent Heteroepitaxy (Ba, La)SnO₃/Muscovite for Flexible Optoelectronics and Thermoelectric
Chih-Yu Yang1*, Min Yen1, Kee Hoon Kim2, Ying-Hao Chu1,3,4
1Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan
2Department of Physics and Astronomy, Seoul National University, Seoul, Korea
3Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan
4Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
* Presenter:Chih-Yu Yang,
Over the past decade, there have been dramatic technological advances in portable electronics, flexible electronics, multifunctional windows, and numerous other devices that feature transparent electrodes. Transparent conducting oxides (TCO) have served as fundamental components in advanced optoelectronic devices spanning solar cells, light emitting diodes, thin film transistors, photocatalysis, flat panel displays, and energy efficient windows. As there is an increasing demand in next-generation devices with high performance, improving the mobility is an essential issue for developing transparent logic devices. Lanthanum-doped barium stannate (Ba, La)SnO₃ (BLSO) is a new TCO with high electron mobility in perovskite structure which captured significant attention in the last decade. In this study, we intend to grow BLSO thin film heteroepitaxially on flexible transparent mica substrates by pulsed laser deposition (PLD) process to achieve the flexible TCO with the electron mobility higher than 100 cm²/(Vs). The combination of BLSO and muscovite exhibits not only excellent electrical properties but also optical and flexible characteristics. Furthermore, we will combine this system with glass as a thermoelectric device to develop a new smart window transferring heat to electric energy. This offers a pathway not only to fabricate flexible transparent high-power functional devices for optoelectronic applications but to construct green-energy smart windows which is the indicator of the future buildings.

Keywords: Lanthanum-doped Barium Stannate, flexible, muscovite, transparent conducting oxides, thermoelectric