Development of Siloxane Coating with Oxide Fillers for Kesteritic (CZTS) Photovoltaic Systems

• Main Authors: Alisa A. Tatarinova, Aleksandr S. Doroshkevych, Olga Yu. Ivanshina, Oleg S. Pestov, Maria Balasoiu, Pavel P. Gladyshev
• Format: Article
• Language: English
• Published: MDPI AG 2021-04-01
• Series: Energies
• Subjects: thin-film photovoltaic; the heat-conducting high-temperature isolating coverings; kesterite photoelectric converters
• Online Access: https://www.mdpi.com/1996-1073/14/8/2142

Photovoltaic systems (PV) based on Cu₂ZnSn(S, Se)₄ (CZTS) solar cells have demonstrated efficiency and high performance. According to the results of comparative studies, the kesterite structure has proven to be ecologically safe and less expensive than other photovoltaic systems. The goal of the present study was to design a disposable high-temperature transparent electrical insulating coating to cover metal plates for photovoltaic devices based on CZTS. The solution was to replace electrically conductive metallics dispersed in a high-temperature siloxane coating with phonon thermal conductivity ceramic particles. Properties of the obtained coating were investigated using different methods. A mathematical model of thermal processes in the film during heating was also developed. For the control sample and the sample with a heat-conducting filler, a quantitative ratio of thermal conductivity was obtained. The research results confirmed the necessary properties of the coating, including resistance to short-term exposure to high temperatures during the synthesis of kesterite.