Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 30, Issue 33, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201908176
Keywords
electroluminescence; light-emitting electrochemical cells; thin-film lighting; white lighting sources
Categories
Funding
- program Ayudas para la atraccion de talento investigador-Modalidad 1 of the Consejeria de Educacion, Juventud y Deporte-Comunidad de Madrid [2016-T1/IND-1463]
- Spanish MINECO [RYC-2016-20891]
- Europa Excelencia program [ERC2019-092825]
- 2018 Leonardo Grant for Researchers and Cultural Creators from BBVA Foundation
- FOTOART-CM project - Madrid region [P2018/NMT-4367]
- Ministerio Project HYNANOSC [RTI2018-099504-A-C22]
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Since the birth of light-emitting electrochemical cells (LECs) in 1995, white LECs (WLECs) still represent a milestone. To date, over 50 contributions have been reported, presenting record WLECs with brightness of up to 10 000 cd m(-2), efficiencies of >10 cd A(-1), and excellent color rendering index >90 in different contributions. This is achieved following three main strategies focused on modifying: i) the design of the emitters, that is, emissive aggregates, multiemissive mechanism, multifluorophoric emitters; ii) the active layer composition, that is, host-guest, multilayers, exciplex- and electroplex-like emitting species systems; and iii) the device architecture, that is, tandem, photoactive filters, and microcavity/interfacial dipole effects. Herein, all of them are comprehensively discussed with respect to the above strategies in the frame of the type of emitters employed. Overall, this work highlights both the advances and challenges of the WLEC field.
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