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To extract valuable information about the HTM molecular structure-device function relationship, we describe those examples that always have used spiro-OMeTAD as a control device and have always used identical experimental conditions e.
The pioneering work was focused on well-understood organic semiconductor moieties such as arylamine, carbazole, and thiophene.
Those chemical structures have been largely employed and studied as HTMs, for instance, in organic light-emitting devices. Interestingly, most research groups have reported the hole mobility values for their novel HTMs. However, only a few examples have been found that have measured the HOMO and LUMO energy levels using advanced spectroscopic techniques to determine these reference energy values directly.Saliba, P. Duffy, and Gregory J. Buckingham: Open University Press. When I was about sixteen I suddenly discovered the. Brainstorming stretches your imagination and thinking capacity. One can also draw a cartoon to represent one's.
Nazeeruddin and M. Qin, H. Controlling energy level positions in hole conducting molecular films by additives. Cheng, W.
Wang, H. Chen and L. Device engineering and optimization of the processing conditions to further improve energy conversion efficiencies is currently under investigation in our laboratory.
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However, only a few molecules incorporated as HTMs in complete functional perovskite solar cells have been capable of matching the performance of the best-performing perovskite solar cells made using spiro-OMeTAD. Fuhrmann-Lieker and J. ACS Energy Letters , 4 2 , Nazeeruddin, Angew. Wong, W.
Bloking, M. Hou, G. Accounts of Chemical Research , 47 11 , Eriksson, Hans Siegbahn, Erik M. Yum, J.