A diphenylphosphine-oxide-based conjugated organic molecule, ((1,3,5-triazine-2,4,6-triyl)tris(benzene-3,1-diyl))tris(diphenylphosphine oxide) (PO-T2T), was doped into ZnO to improve the characteristics of the electron transport layer (ETL) in inverted organic solar cells (OSCs). A series of characterization techniques were carried out to demonstrate the function of PO-T2T in film aspect, including transmittance, atomic force microscopy (AFM), transmission electron microscopy (TEM), water contact angle and grazing incidence wide angle X-ray scattering (GIWAXS). Light dependent, space-charge-limited current, exciton dissociation possibility were aimed to explore the influence of PO-T2T for internal carrier behaviors based on PTB7-Th: PC₇₁BM system. It's found that the PO-T2T doped ETLs played a role in morphology optimization of ETL and undermined the trap-assistant recombination through filling the defects ZnO itself had, simultaneously. Besides, the electron mobility was also improved. With the optimized functionalities, the OSCs' efficiency based on fullerene system Poly[4,8- bis(5-(2-Ethylhexyl)thiophen-2-yl) benzo [1,2-b:4,5-b′] dithiophene-co-3-fluorothieno [3,4-b] thiophene-2-carboxylate] (PTB7-Th): [6,6]-Phenyl C71 butyric acid methyl ester (PC₇₁BM) was improved from 9.03% to 9.84%. Finally, when this strategy was applied into another hot-topic system, poly((2,6-(4,8-bis(5-(2-ethylhexyl-3- fluoro)thiophen-2-yl)-benzo[1,2-b:4,5-b′]dithiophene))-alt-(5,5- (1′,3′-di-2-thienyl)-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′,5′-c′] dithiophene-4,8-dione)) (PBDB-TF):2,2′-((2Z,2′Z)-((12,13-bis(2- ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e] thieno[2,″3″:4′,5′]thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5] thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (Y6), a high PCE of 16.34% was obtained. These results demonstrated that the PO-T2T had a positive role in OSC performance improvement.

基于二苯膦氧化物的共轭有机分子（（（1,3,5-triazine-2,4,6-triyl）tris（苯-3,1-二基））tris（diphenylphosphine oxide）（PO-T2T），将其掺杂到ZnO中以改善倒置有机太阳能电池（OSC）中电子传输层（ETL）的特性。进行了一系列表征技术以证明PO-T2T在胶片方面的功能，包括透射率，原子力显微镜（AFM），透射电子显微镜（TEM），水接触角和掠入射入射广角X射线散射（ GIWAXS）。基于光的，空间电荷受限的电流，激子解离的可能性旨在探讨PO-T2T对基于PTB7-Th：PC _71的内部载流子行为的影响BM系统。发现掺杂PO-T2T的ETL在ETL的形态优化中发挥了作用，同时通过填充ZnO本身的缺陷破坏了陷阱辅助重组。此外，电子迁移率也得到提高。通过优化的功能，基于富勒烯体系聚[4,8-双（5-（2-乙基己基）噻吩-2-基）苯并[1,2-b：4,5-b']二噻吩的OSC效率-co-3-fluorothieno [3,4-b]噻吩-2-羧酸酯]（PTB7-Th）：[6,6]-苯基C71丁酸甲酯（PC ₇₁BM）从9.03％提高到9.84％。最后，当将此策略应用于其他热门话题系统时，聚（（2,6-（4,8-双（5-（2-乙基己基-3-氟）噻吩-2-基）-苯并[1， 2-b：4,5-b']二噻吩））-alt-（5,5-（1'，3'-二-2-噻吩基）-5'，7'-双（2-乙基己基）苯并[ 1'，2'-c：4'，5'-c']二噻吩-4,8-​​dione））（PBDB-TF）：2,2'-（（（2Z，2'Z）-（（12， 13-双（2-乙基己基）-3,9-二十一烷基-12,13-二氢-[1,2,5]噻二唑并[3,4-e]噻吩并[2，“ 3”：4'，5'] thieno [2'，3'：4,5]吡咯并[3,2-g] thieno [2'，3'：4,5] thieno [3,2-b] indole-2,10-diyl）bis（甲基亚芳基）双（5,6-二氟-3-氧代-2,3-二氢-1H-茚-2,1-二亚甲基））二甲基腈（Y6），获得了16.34％的高PCE。这些结果表明，PO-T2T在OSC性能改善中具有积极作用。