In recent years, structural modification for boron-dipyrromethene (BODIPY) derivatives has been proven to be an effective way to improve their performance of organic solar cells (OSCs). Here, three D-A-D type small molecule donors BDP-1, BDP-2 and BDP-3 were synthesized based on 3,5,8-trimethyl BODIPY dye as the core by the introduction of 4-(diethylamino)phenyl, 4-diethylamino-2-methoxyphenyl and 4-(diphenylamino)phenyl at the 3, 5 and 8 positions, respectively, and used for the construction of organic solar cells. BDP-1, BDP-2, and BDP-3 are synthesized. Due to the strong electron-donating ability of the substituted groups at 3, 5, and 8 positions of BODIPY core, three donors exhibit extended π-conjugation and effective intramolecular charge transfer, resulting in the strong absorption in the range of 500–––900 nm with narrow band gaps below 1.52 eV. BDP-1, BDP-2 and BDP-3 display complementary absorption spectra and suitable highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital levels (LUMO) with fullerene derivative PC₇₁BM. These molecules (BDP-1, BDP-2 or BDP-3) as electron donor were applied into BHJ solar cells by using PC₇₁BM as electron acceptor. The performance of BHJ organic solar cells is systematically investigated and compared. The optimized solar cells based on BDP-1, BDP-2 and BDP-3 show high power conversion efficiencies (PCEs) of 9.52%, 11.83% and 5.27%, respectively. The OSCs based on BDP-2: PC₇₁BM exhibited excellent short-circuit current density (J_sc), high electron mobility and open-circuit voltage (V_oc). This work demonstrates that BODIPY derivatives with simple-structured show great potential for high performance OSCs.

近年来，硼二吡咯亚甲基（BODIPY）衍生物的结构修饰已被证明是提高有机太阳能电池（OSC）性能的有效方法。本研究以3,5,8-三甲基BODIPY染料为核心，引入4-(二乙氨基)苯基、4-二乙氨基-，合成了三种DAD型小分子供体BDP-1、BDP-2和BDP-3。 2-甲氧基苯基和4-(二苯基氨基)苯基分别位于3、5和8位，用于构建有机太阳能电池。BDP-1、BDP-2和BDP-3被合成。由于BODIPY核3、5、8位取代基具有很强的给电子能力，三个给电子体表现出扩展的π共轭作用和有效的分子内电荷转移，导致在500–––范围内具有强吸收900 nm，窄带隙低于 1.52 eV。BDP-1、BDP-2和BDP-3与富勒烯衍生物PC 71 _BM表现出互补的吸收光谱以及合适的最高占据分子轨道(HOMO)和最低未占据分子轨道能级(LUMO)。这些分子（BDP-1 , BDP-2或BDP-3 ）作为电子供体通过使用 PC ₇₁应用于 BHJ 太阳能电池BM作为电子受体。对 BHJ 有机太阳能电池的性能进行了系统的研究和比较。基于BDP-1、BDP-2和BDP-3的优化太阳能电池分别表现出9.52%、11.83%和5.27%的高功率转换效率(PCE)。基于BDP-2 : PC ₇₁ BM 的 OSC 表现出优异的短路电流密度 ( J _sc )、高电子迁移率和开路电压 ( V _oc )。这项工作表明，结构简单的 BODIPY 衍生物在高性能 OSC 方面显示出巨大的潜力。