A series of organic photovoltaic （PV） cells in which the electron acceptor and donor are gadolinium （dibenzoylmethanato）3（bathophenanthroline） and N,N′-diphenyl-N,N′bis（3-methylphenyl）-1,1′-diphenyl-4,4′-d...A series of organic photovoltaic （PV） cells in which the electron acceptor and donor are gadolinium （dibenzoylmethanato）3（bathophenanthroline） and N,N′-diphenyl-N,N′bis（3-methylphenyl）-1,1′-diphenyl-4,4′-diamine , respectively, were fabricated. Although TPD acts as an active layer in the bilayered cells, insertion of a Gd-complex film between TPD and the alloy cathode is necessary for efficient carrier photogeneration. Open-circuit voltage of 3.2 V is obtained due to efficient exciton dissociation near the interface between （Gd（DBM）3bath） and TPD. By incorporating an ultrathin mixed layer of Gd-complex and TPD, external quantum efficiency is improved significantly.It was found that photovoltaic performance of the devices has a common origin, exciplex formation, which results in broadband emission during both photoluminescent and the electroluminescent processes.展开更多
采用单光子计数法(Time Correlated Single Photon Counting,TCSPC)测量了MEH-PPV和CdS共混薄膜退火处理前后受到超短脉冲激光激发及光生载流子的瞬态衰减过程,得到了MEH-PPV:CdS共混薄膜材料的光生载流子寿命。分析表明,退火处理后MEH-...采用单光子计数法(Time Correlated Single Photon Counting,TCSPC)测量了MEH-PPV和CdS共混薄膜退火处理前后受到超短脉冲激光激发及光生载流子的瞬态衰减过程,得到了MEH-PPV:CdS共混薄膜材料的光生载流子寿命。分析表明,退火处理后MEH-PPV:CdS共混薄膜材料的光生载流子寿命更长,相应的光伏器件(结构为ITO/PEDOT:PSS/MEH-PPV:CdS/Al的有机薄膜光伏器件)也具有较高的光电转换效率。展开更多
文摘A series of organic photovoltaic （PV） cells in which the electron acceptor and donor are gadolinium （dibenzoylmethanato）3（bathophenanthroline） and N,N′-diphenyl-N,N′bis（3-methylphenyl）-1,1′-diphenyl-4,4′-diamine , respectively, were fabricated. Although TPD acts as an active layer in the bilayered cells, insertion of a Gd-complex film between TPD and the alloy cathode is necessary for efficient carrier photogeneration. Open-circuit voltage of 3.2 V is obtained due to efficient exciton dissociation near the interface between （Gd（DBM）3bath） and TPD. By incorporating an ultrathin mixed layer of Gd-complex and TPD, external quantum efficiency is improved significantly.It was found that photovoltaic performance of the devices has a common origin, exciplex formation, which results in broadband emission during both photoluminescent and the electroluminescent processes.
基金the Ministry of Science and Technology of China(2017YFA0204504)the National Natural Science Foundation of China(51873221,52073292,51673207,21774003,and 51373183)+2 种基金Chinese Academy of Sciences and Dutch Research Project(1A111KYSB20190072)Beijing Municipal Science&Technology Commission(Z181100004418012)Beijing Natural Science Foundation(2212032).
文摘采用单光子计数法(Time Correlated Single Photon Counting,TCSPC)测量了MEH-PPV和CdS共混薄膜退火处理前后受到超短脉冲激光激发及光生载流子的瞬态衰减过程,得到了MEH-PPV:CdS共混薄膜材料的光生载流子寿命。分析表明,退火处理后MEH-PPV:CdS共混薄膜材料的光生载流子寿命更长,相应的光伏器件(结构为ITO/PEDOT:PSS/MEH-PPV:CdS/Al的有机薄膜光伏器件)也具有较高的光电转换效率。
