An acceptor-donor-acceptor (A-D-A) conjugated small molecule, DHII-EH-TR, was designed, synthesized, and its solar cell performance studied. The DHII-EH-TR molecule with its extended fused aromatic core had a narrow bandgap and displayed red-shifted absorption. To investigate its photovoltaic properties and device application, small molecule-based organic photovoltaics (SMOPVs) were fabricated having the conventional structure of ITO/PEDOT:PSS/DHII-EH-TR:PC₇₀BM/ZnO NPs/Al (PEDOT:PSS, poly (3,4-ethylenedioxythiophene):polystyrene sulfonic acid; ZnO NPs, ZnO nanoparticles). Solar cells made with a blend of 1,8-diiodooctane with ZnO NPs generated the highest performance with a power conversion efficiency (PCE) of 3.60%. Charge dynamics and transport, microscopic thin film analysis, and morphology were studied to explain the performance of SMOPVs made with DHII-EH-TR.

设计，合成了受体-受体-受体（ADA）共轭小分子DHII-EH-TR，并研究了其太阳能电池性能。具有扩展的稠合芳族核的DHII-EH-TR分子具有较窄的带隙并显示出红移的吸收。为了研究其光伏特性和器件应用，制造了具有常规结构的ITO / PEDOT：PSS / DHII-EH-TR：PC _70的小分子有机光伏（SMOPV）。BM / ZnO NPs / Al（PEDOT：PSS，聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸； ZnO NPs，ZnO纳米颗粒）。由1,8-二碘辛烷与ZnO NPs混合制成的太阳能电池以3.60％的功率转换效率（PCE）产生了最高的性能。研究了电荷动力学和传输，显微薄膜分析和形态，以解释用DHII-EH-TR制成的SMOPV的性能。