Next-Generation Solar Cell Research Project
Introduction
The topic of this research aims to develop the techniques of highly efficient 2-terminal perovskite-Si tandem solar cells. We intend to stack two kinds of solar cells (the perovskite-based solar cells and Si-based cells) with different optical working spectra into one device. This strategy would overcome the Shockley-Queisser limit in the power conversion efficiency (PCE) of the single-junction solar cells. We target several techniques to fabricate the perovskite-Si tandem solar cell modulus with PCE higher than 30%. The higher PCE magnitude increases the total electric power density generated per unit area and reduces the emission of greenhouse gases, which is one of the strategies to achieve the national goal of net-zero emissions.
Laboratory contact number:06-216-7809
Major Milestones of the Project
Our team developed a perovskite-silicon tandem solar cell, achieving significant advancements by repeatedly breaking our own records for a cell area of 1 cm² within a year. With a customized Heterojunction (HJT) substrate, it reached 30.1% efficiency and 27.3% on a commercial Tunnel Oxide Passivating Contacts (TOPCon) substrate. These breakthroughs result from optimizing the transport layers and developing high-quality perovskite structures.（Detailed information：https://www.sinica.edu.tw/en/News_Content/55/3044）
Pictures of research results
單層與疊層電池效率比較
疊層電池與其對應之吸收光譜
本團隊憑藉優秀的研發實力與努力不懈的探索精神，在短短十個月屢次堆高鈣鈦礦-矽基疊層太陽能電池的自我紀錄(area:1cm2)，從原本的23.5%提升至31.7%，成長約三成。也成功在市售的TOPCon矽基板上疊層鈣鈦礦上電池，目前效率為27.3%，為國內第一個發展2T perovskite/TOPCon tandem devices的團隊。
客製化HJT與商業化TOPCon為下電池基板並與本研究之上電池鈣鈦礦疊層，光電轉換效率分別達到31.8%與27.3%。