【摘要】 将非富勒烯受体2,2′-{（2Z,2′Z）-[4,4,9,9-四（对己基苯）-4,9-二氢-S-引达省并二噻吩-2,7-二基]双（甲基亚基）}-双-（3-氧代-2,3-二氢-1H-茚-2,1-二亚甲基）二丙二腈（IDIC）作为第三组分引入小分子给体卟啉二聚体ZnP2-DPP和富勒烯（6,6）-苯基-C61-丁酸甲酯(PC₆₁BM)受体体系,构建了光电转换效率达12.18%的全小分子有机太阳能电池,高于ZnP2-DPP∶PC₆₁BM的9.47%和ZnP2-DPP∶IDIC的8.82%的光电转换效率.IDIC的引入扩大了光谱的吸收范围,并且促进了给受体之间的电荷转移,使得三元共混物中可以产生更高的光电流.另外，IDIC的加入优化了共混膜的形貌,分子取向也得到了明显的调整,形成了face-on和edge-on的混合取向,从而使活性层中形成了更有利的三维电荷传输通道,促进了短路电流密度和填充因子的提高.这种策略发挥了富勒烯和非富勒烯受体的优势,从而提高了有机太阳能电池的4个参数.更多还原

【Abstract】 The introduction of a non-fullerene acceptor 2,2′-{（2Z,2′Z）-[（4,4,9,9-tetrahexyl-4,9-d Chemicalbookihydro-s-indaceno[1,2-b∶5,6-b′]dithiophene-2,7-diyl）bis（methanylylidene）]bis（3-oxo-2,3-dihydro-1H-indene-2,1-diylidene）}dimalononitrile（IDIC） as the third component into a dimeric porphyrin small molecule donor（ZnP2-DPP） and fullerene acceptor[6,6]-phenyl-C61-butyric acid methyl ester(PC₆₁BM) system achieved all-small molecule ternary organic solar cells（OSCs） with a power conversion efficiency（PCE） of 12.18%,which is higher than 9.47%for ZnP2-DPP∶PC₆₁BM binary cells and 8.82%for ZnP2-DPP∶IDIC binary OSCs.The addition of IDIC increased the absorption spectrum range and promoted the charge transfer between the three components,improving the photocurrents for the ternary solar cells.The synergy of the fullerene and non-fullerene acceptors effectively optimized the morphology of the blend film,and the molecular orientation was significantly tuned to form a hybrid orientation of face-on and edge-on,which led to a more favorable three-dimensional charge transport channels in the active layer and promotes the short-circuit current density(J_SC) and fill factor（FF）.This strategy exploited the advantages of both fullerene and non-fullerene acceptors,thus improving the four photovoltaic parameters of organic solar cells（OSCs）.更多还原