Development of high-efficient three-layered organic solid-state solar cell

高效三层有机固态太阳能电池的研制

基本信息

批准号：
18560012
负责人：
HIRAMOTO Masahiro
金额：
$ 2.46万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560012/
关键词：
p-i-n iunction organic solar cells Ultra-high purification seven-nine conversion efficiency of 5.3%1000h operation increase of open-circuit photoyoltage fullerene ZnO transparent electron transport layer P-I-N接合有機太陽電池結晶析出昇華精製効率5.3%

项目摘要

(1) p-i-n organic solar cells having thick codeposited i-interlayer composed of metal-free phthalocyanine and fullerene were successfully fabricated by using fullerene purified seven-nine level (99.99999%) by means of the single-crystal formed sublimation. Fill factor of p-i-n cells hardly decreased even for extremely thick i-interlayer reaching 1200 nm. Short-circuit photocurrent density reached 19 mAcm^<-2> based on nearly 100% absorption of visible light in the solar spectrum by thick i-interlayer. As a result, the photo-electric conversion efficiency of 5.3% (world record) was obtained.(2) Long-term operation tests of p-i-n organic solar cells were performed in various atmosphere. Under high vacuum (<10^<-7> Torr), p-i-n cell covered with Al-doped ZnO film acting as transparent electron transport layer was operated without degradation for 1000 hours (42 days).(3) It has been confirmed that the attainable open-circuit photovoltage (V_<oc>) for organic photovoltaic cells consisting of co-deposited films is determined by the effective bandgap, namely, the energetic difference between the LUMO level of the n-type organic semiconductor and the HOMO level of the p-type organic semiconductor. The observed V_<oc> increased with increasing effective bandgap and exceeded 0.7 V.

(1)利用提纯的七九级富勒烯(99.99999%)通过单晶升华成功制备了具有由无金属酞菁和富勒烯组成的厚共沉积i-中间层的p-i-n有机太阳能电池。即使 i 中间层厚度达到 1200 nm，p-i-n 电池的填充因子也几乎没有下降。基于厚的i-中间层对太阳光谱中的可见光几乎100％的吸收，短路光电流密度达到19mAcm^-2。结果获得了5.3%的光电转换效率(世界纪录)。(2)在多种气氛下进行了p-i-n有机太阳能电池的长期运行测试。在高真空（<10^<-7>Torr）下，覆盖有Al掺杂ZnO薄膜作为透明电子传输层的p-i-n电池运行1000小时（42天）而没有退化。（3）已经证实，由共沉积薄膜组成的有机光伏电池可达到的开路光电压（V_<oc>）由有效带隙决定，即n型有机半导体和n型有机半导体的LUMO能级之间的能量差。 p型有机半导体的HOMO能级。观察到的 V_<oc> 随着有效带隙的增加而增加，并超过 0.7 V。