期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 23, 期 68, 页码 17209-17212出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201704694
关键词
donor-acceptor systems; heterocycles; perovskites; polycycles; solar cells
资金
- European Commission [H2020-ICT-2014-1]
- SOLEDLIGHT project [N1: 643791]
- SwissState Secretariat for Education, Research and Innovation (SERI), Solaronix, Aubonne [CTI 15864.2 PFNM-NM]
- EPSRC [EP/K038869/1] Funding Source: UKRI
Methods for effective synthesis for the four possible isomeric 3,9-diphenylullazine carboxaldehydes and reactive halogen intermediates are described. Ullazine donor-acceptor (D-A) dyes were studied using UV/Vis, photoluminescence (PL) spectroscopy and cyclic voltammetry. X-ray single crystal diffraction analysis independently confirmed the structures of two key intermediates. A D-A dye based on ullazine with dihexylmalonate acceptor was tested as a dopant-free hole-transporting material (HTM) in a perovskite solar cell, exhibiting promising power conversion efficiency (PCE) reaching 13.07%.
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