کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
81051 | 49419 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Impact of the energy difference in LUMO and HOMO of the bulk heterojunctions components on the efficiency of organic solar cells Impact of the energy difference in LUMO and HOMO of the bulk heterojunctions components on the efficiency of organic solar cells](/preview/png/81051.png)
The characteristics of two bulk heterojunctions photovoltaic devices composed of zinc phthalocyanine (ZnPc) as electron donor and as electron acceptor, for which we used perylene tetracarboxylic dianhydrid (PTCDA) or 1,4-diaminoanthraquinone (1,4-DAAQ) having been studied. Organic semiconductor-blended films were formed by highvacuum co-evaporation. To study the properties of the different samples, the films were characterized by optical absorption, scanning electron microscopy (SEM) measurements, and solar cell I–V measurements, AM1.5 (1000 W/m2) irradiance. Theoretical and experimental results have shown that a better efficiency is obtained in blending ZnPc with PTCDA more than with 1,4-DAAQ. The offset of the band edges of highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels of the blended components will prove responsible for the improvement of all photovoltaic properties of the organic solar cells.
Journal: Solar Energy Materials and Solar Cells - Volume 91, Issue 13, 15 August 2007, Pages 1163–1167