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56,60:2'',3''][5,6]fullerene-C60-Ih is also known as ICBA or IC60BA. ICBA is one of the fullerene derivatives used in organic solar cells (OSC). Due to the shallow lowest unoccupied molecular orbital (LUMO) level, it can replace the commonly used PCBM70 to improve the performance of bulk heterojunction solar cells[1].

ICBA is a C₆₀ derivative that can be synthesized from C₆₀ and indene. It is an acceptor material with shallow lowest occupied molecular orbital(LUMO) which can be used to enhance the performance of polymeric solar cells(PSCs).

[1] Sharma R, et al. Photo-physics of PTB7, PCBM and ICBA based ternary solar cells. Organic Electronics, 2016; 34: 111-117.
[2] Oliveira E, et al. Modifying electronic properties of ICBA through chemical substitutions for solar cell applications. Structural Chemistry, 2017; 28: 1133–1140.