Improved interconnecting layer for Perovskite–organic tandem solar cells

Journal article : Letter

Monolithic perovskite–organic tandem solar cells (POTSCs) have attracted considerable attention in recent years due to their compatible fabrication routes and advances in single-cell efficiencies. To further boost the performance of POTSCs, reducing the voltage losses that mainly arise from wide bandgap (WBG, >1.7 eV) perovskite subcells and interconnecting layers (ICLs) is critical. Here, a new ICL with a configuration of C60/YbO x /Au/MoO x is demonstrated for constructing the monolithic POTSC. The YbO x -based ICL benefits from an ohmic contact and high transparency, resulting in improved POSTC performance. The champion device presents a PCE of 23.2% owing to a high V OC of 2.11 V (approximately equal to the sum of individual V OC’s of the subcells) without compromising the short-circuit current density and fill factors. This work opens an avenue for developing efficient ICLs in POTSCs.

Authors: Xiao, Y; Huang, T; Chen, N; Chen, P; Luo, D

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Chemical Society
• Journal: ACS Energy Letters
• Volume: 10
• Issue: 10
• Pages: 5184-5191
• Publication date: 2025-09-30
• Acceptance date: 2025-09-23
• DOI: 10.1021/acsenergylett.5c01923
• EISSN: 2380-8195
• ISSN: 2380-8195
• Language: English
• Subtype: Letter