Indoor Organic Photovoltaics with Over 29% Efficiency and Great Stability Enabled by Giant Dimeric Acceptors with Hypsochromic Absorption and High Glass Transition Temperature.

ABSTRACT: Indoor organic photovoltaics (IOPVs) are an emerging LED light recycling technology with promising applications such as indoor off-grid ecosystem for the Internet of Things. However, efficient and stable IOPVs based on giant dimeric acceptors (GDAs) are rarely reported due to the dearth of GDAs with hypsochromic absorption (absorption onset < 850 nm) and good crystallinity. Herein, two hypsochromic GDAs are proposed with different fluorination degrees, namely DY4FO-V and DY6FO-V, and process a systematic study of hypsochromic acceptor materials from the small molecule to dimers and polymer. Interestingly, both hypsochromic GDAs possess better crystallinity, thus faster carrier transport and suppress recombination than small-molecule and polymer acceptor-based devices. With extra fluorinati

SUBMITTER: Zou B 

PROVIDER: S-EPMC12667510 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature