Recently, a latest research result on high-efficiency silicon heterojunction (SHJ) cell from Maxwell has been published in Nature Energy, being the second paper of the Company published in this world's top academic journal.
The paper, which is titled Industrial-scale deposition of nanocrystalline silicon oxide for 26.4%-efficient silicon heterojunction solar cells with copper electrodes, is a collaborative effort involving Maxwell team, Soochow University, SunDrive Corporation, Dalian University of Technology, Southwest University etc., with Suzhou Maxwell Technologies Co., Ltd. as the main unit, and Mr. Jian Zhou of Maxwell, Professor Xinbo Yang and Professor Xiaohong Zhang of Soochow University, as well as Professor Alison Lennon of SunDive as the corresponding authors.
The paper elaborates the manufacturing technology of high quality nanocrystalline silicon film by using the large-area (2m×2m) PECVD chambers with VHF excitation frequencies independently innovated by Maxwell, the high mobility TCO process with PVD transition metal doping synchronously developed by the industry-university-research team, as well as metallization technology with the direct electroplating process without seed layer. Combining the above, Maxwell finally achieved the mutual demonstration of the principle and method of making the silicon heterojunction (SHJ) cells with 26.41% ultra-high conversion efficiency, paving the way for large-scale industrialization of high-efficiency SHJ cells.
Relying on its continuous exploration and further study in the field of advanced SHJ technology, Maxwell has realized numerous innovative breakthroughs. While achieving the rapid growth through technical strength, the Company strives to create a cooperation environment for integration of industry-university-research and strengthen its technology “sharing power". Leveraging its National Enterprise Technology Center as the platform, Maxwell cooperates with upstream and downstream enterprises of the industrial chain, universities, and institutions in building a SHJ technology ecosystem. The Company has opened four laboratories to domestic and foreign partners, providing test and experimental development environments in terms of new materials such as indium-free target and silver-coated copper paste, new technology, new cell structure as well as localized equipment parts, and sharing research and development data and achievements.
In the future, Maxwell will continue to cooperate with industry partners in promoting the development and industrial application of HJT technology through sharing and exchange of innovative achievements.