Perovskite Solar Cells Face Challenges

Organic-inorganic lead halide perovskite solar cells (PSCs) have excellent performance, and the power conversion efficiencies PCEs have increased from 3.8% to 25.7% in the past few years. However, perovskite solar cells generally use methylamine (MA) or formamidine (FA) as the organic cation component, which affects the stability of the device under heating, humidity and sunlight.

To overcome this problem, inorganic perovskite solar cells with composition CsPbX3 (X = Cl, Br, and I) have been extensively studied in recent years. In addition to the optimization of the perovskite layer, energy losses at the interface or transport layers in solar cells cannot be ignored. For a long time, TiO2 has been the most widely used electron transport layer (ETL) material, but its low charge conductivity and high-temperature process are not conducive to obtaining efficient and stable PSCs. In contrast, the SnO2 electron transport layer has low-temperature processability, high electronic conductivity, high optical transmittance, and reasonable energy bands.

At present, a variety of synthesis methods of SnO2 nanocrystals (SnO2 NCs) have been reported, including reflux method, hydrothermal method, solvothermal method, microwave-assisted method, and room temperature solution stirring method, etc. In addition, various additives have been studied to regulate the synthesis process of SnO2 nanocrystals, such as tetramethylammonium hydroxide (TMAH), tetrabutylammonium hydroxide (TBAOH), ammonium hydroxide (NH3-H2O), thiourea, etc. However, to fully meet the requirements of PSCs, the controllable growth of SnO2 nanocrystals still faces challenges.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

Chinese Website: Cheersonic Provides Professional Coating Solutions