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Simple, Fast, Bright, and Stable Light Sources
Author(s) -
Tordera Daniel,
Meier Sebastian,
Lenes Martijn,
Costa Rubén D.,
Ortí Enrique,
Sarfert Wiebke,
Bolink Henk J.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104047
Subject(s) - materials science , ionic bonding , iridium , ionic liquid , constant current , optoelectronics , electrochemistry , current (fluid) , analytical chemistry (journal) , nanotechnology , ion , chemistry , electrode , thermodynamics , organic chemistry , physics , catalysis
In this work we show that solution‐processed light‐emitting electrochemical cells (LECs) based on only an ionic iridium complex and a small amount of ionic liquid exhibit exceptionally good performances when applying a pulsed current: sub‐second turn‐on times and almost constant high luminances (>600 cd m −2 ) and power efficiencies over the first 600 h. This demonstrates the potential of LECs for applications in solid‐state signage and lighting.