Energy level alignment in polymer organic solar cells at donor-acceptor planar junction formed by electrospray vacuum deposition
作者： Ji-Hoon Kim , Jong-Am Hong , Dae-Gyeon Kwon , Jaewon Seo , Yongsup Park
DOI: 10.1063/1.4873164
关键词:
摘要: Using ultraviolet photoelectron spectroscopy (UPS), we have measured the energy level offset at planar interface between poly(3-hexylthiophene) (P3HT) and C61-butyric acid methylester (PCBM). Gradual deposition of PCBM onto spin-coated P3HT in high vacuum was made possible by using electrospray (EVD). The UPS measurement EVD-prepared resulted 0.91 eV HOMO LUMO, which is considered as upper limit Voc organic photovoltaic cells.Using cells.
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