Abstract:
:We report a small molecule tandem organic photovoltaic (OPV) cell with a high power conversion efficiency (PCE) of 7.27%. This cell contains two subcells with an identical mixed active layer of C70:5 wt%TAPC (1,1-bis-(4-bis(4-methyl-phenyl)-amino-phenyl)-cyclohexane). The performance was dramatically improved by simply inserting a thin boron subphthalocyanine chloride (SubPc) interlayer, which results in an increase of the short-circuit current and open-circuit voltage as well as a decrease of the series resistance of the tandem cell. The response of the cell only contributed from the absorption of C70. The high PCE was attributed to the high absorption efficiency of C70 and improved holes extraction efficiency at the anode due to the band bending occurs at both MoO3/SubPc and SubPc/C70:5 wt%TAPC interfaces.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Gao Y,Jin F,Li W,Su Z,Chu B,Wang J,Zhao H,Wu H,Liu C,Hou F,Lin T,Song Qdoi
10.1038/srep23916subject
Has Abstractpub_date
2016-04-01 00:00:00pages
23916issn
2045-2322pii
srep23916journal_volume
6pub_type
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