Synthesis, spectral, electrochemical properties, and photovoltaic performance of structurally constrained BODIPY dyes with 4,4-dimethyltriphenylamine at the 2,6-positions

摘要: Abstract Novel symmetrical D–A–D type of BODIPY derivatives (DTPA–BDP) were synthesized successfully. The introduction chromophoric units makes the molecule absorption wavelengths spanning ranges 300–800 nm and shifts emission to 793 nm in red near-infrared region. Bulk heterojunction solar cells with DTPA–BDPs as electron donor PC61BM acceptor exhibited photovoltaic properties a power conversion efficiency 0.77%, an open-circuit voltage 0.70 V.