Selenium-substituted core and synergistic regioisomer-free monomethylated terminal enable methylated acceptor with efficiency and low energy loss in binary organic solar cells

Key Points

• The study aims to examine how selenium substitution and methyl modifications of small molecular acceptors affect the efficiency of organic solar cells.
• Utilized selenium-substituted and monomethylated small molecular acceptors in organic solar cell construction
• Measured efficiency and energy loss during device operation
• Analyzed the synergistic effects of modifications on device performance
• Selenium substitution led to increased efficiency in organic solar cells
• Monomethylation reduced energy loss compared to other configurations
• Synergistic effects indicated improved performance without forming regioisomers