Golden Solar (Hong Kong) Solar Material Company Limited, a wholly owned subsidiary of the Golden Solar New Energy Technology Holdings Limited has signed memorandum of understanding for research collaboration with Gold Stone (Fujian) Energy Company Limited and the National University of Singapore, acting through its Solar Energy Research Institute of Singapore, in relation to the research cooperation on the multi-junction heterojunction silicon solar cell-based device structures with a perovskite top cell, perovskite materials, know-how in incorporating the perovskite technology to heterojunction solar cell structure. The research cooperation will be supported exclusively by the tandem solar cells research group from SERIS, for the purpose of perovskite/heterojunction silicon tandem solar cells. The Perovskite/Heterojunction Silicon Tandem Solar Cell Project will be carried out in multiple stages, with the aim to gradually realize the mass production stage from the research and development stage and the initial pilot production stage of perovskite/heterojunction silicon tandem solar cell technology by combining the perovskite and tandem-related technology of SERIS, the silicon wafer and heterojunction cell technology of the Group, and the heterojunction equipment technology of Gold Stone Energy.

The initial goal of the three parties is to achieve an energy conversion efficiency of more than 28% for perovskite/heterojunction silicon tandem solar cells in the preliminary research stage.