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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)利用富勒烯提纯的7-9能级(99.99999%)，采用单晶成型升华的方法，成功地制备了具有厚共沉积I过渡层的p-i-n有机太阳电池。即使在极厚的I-夹层达到1200 nm时，p-i-n电池的填充因子也几乎没有下降。基于厚的I-夹层对太阳光谱中可见光的几乎100%的吸收，短路光电流密度达到19mAcm^-2。实现了5.3%的光电转换效率(世界纪录)。(2)对p-i-n有机太阳能电池在不同气氛下进行了长期运行试验。在高真空(&lt；10^&lt；-7&gt；Torr)下，Al掺杂的氧化锌薄膜作为透明电子传输层的p-i-n电池工作了1000小时(42天)而没有退化。(3)证实了由共沉积薄膜组成的有机光伏电池所能获得的开路光电压(V&lt；oc&gt；)取决于有效带隙，即n型有机半导体的LUMO能级与p型有机半导体的HOMO能级之间的能量差。观察到的V&lt；oc&gt；随有效带隙的增大而增大，超过0.7V。