Solution-processed 2D niobium diselenide nanosheets as efficient hole-transport layers in organic solar cells.
Thin-layer, two-dimensional NbSe2 nanosheets with lower trap density have been obtained and act as an alternative hole-transporting layer to replace MoO3 in organic solar cells. If poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl}):[6,6]-phenyl-C71-butyric acid methyl ester acts as an active layer, a power conversion efficiency of 8.10 % has been achieved without any further thermal treatment. The properties of this hole-transporting layer were investigated and the improvements in the devices are discussed.
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123 (PR China).
Xing
X
Gu
Wei
W
Cui
Tao
T
Song
Changhai
C
Liu
Xiaoze
X
Shi
Suidong
S
Wang
Baoquan
B
Sun
D011211:Electric Power Supplies; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry*; D009556:Niobium / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D012643:Selenium / Q000737:chemistry*; D012996:Solutions; D013472:Sunlight
D009930:Organic Chemicals; D012996:Solutions; D009556:Niobium; D012643:Selenium
chalcogens; electrochemistry; nanostructures; niobium; organic solar cells