A near infrared light emitting electrochemical cell with a 2.3 V turn-on voltage

被引:15
作者
Bideh, Babak Nemati [1 ]
Shahroosvand, Hashem [1 ]
Sousaraei, Ahmad [2 ]
Cabanillas-Gonzalez, Juan [2 ]
机构
[1] Univ Zanjan, Dept Chem, Grp Mol Engn Adv Funct Mat GMA, Zanjan, Iran
[2] Madrid Inst Adv Studies Nanosci, IMDEA Nanociencia, Calle Faraday 9,Ciudad Univ Cantoblanco, Madrid 28049, Spain
关键词
TRANSITION-METAL-COMPLEXES; RUTHENIUM(II) COMPLEX; PHOTOPHYSICAL PROPERTIES; POLYPYRIDINE COMPLEXES; RU(II) COMPLEXES; TRIPLET ENERGY; SINGLE-LAYER; ELECTROLUMINESCENCE; LIGANDS; LUMINESCENCE;
D O I
10.1038/s41598-018-36420-1
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We report on an organic electroluminescent device with simplified geometry and emission in the red to near infrared (NIR) spectral region which, has the lowest turn-on voltage value, 2.3 V, among light emitting electrochemical cells (LEECs). We have synthesized and characterized three novel ruthenium pi-extended phenanthroimidazoles which differ on their (NN)-N-boolean AND ligands. The use of dimethyl electron donating groups along with the pi-extended phenanthroimidazole moiety promotes ambipolar transport thereby avoiding the use of additional charge transport layers. Furthermore, a facile cathode deposition method based on transfer of a molten alloy (Ga:In) on top of the active layer is deployed, thus avoiding high vacuum thermal deposition which adds versatile assets to our approach. We combine ambipolar charge transport organic complex design and a simple ambient cathode deposition to achieve a potentially cost effective red to NIR emitting device with outstanding performance, opening new avenues towards the development of simplified light emitting sources through device optimization.
引用
收藏
页数:8
相关论文
共 51 条
[1]  
[Anonymous], 2008, Highly Efficient OLEDs with Phosphorescent Materials
[2]   Controlling Ground and Excited State Properties through Ligand Changes in Ruthenium Polypyridyl Complexes [J].
Ashford, Dennis L. ;
Glasson, Christopher R. K. ;
Norris, Michael R. ;
Concepcion, Javier J. ;
Keinan, Shahar ;
Brennaman, M. Kyle ;
Templeton, Joseph L. ;
Meyer, Thomas J. .
INORGANIC CHEMISTRY, 2014, 53 (11) :5637-5646
[3]   Stable single-layer light-emitting electrochemical cell using 4,7-diphenyl-1,10-phenanthroline-bis(2-phenylpyridine) iridium(III) hexafluorophosphate [J].
Bolink, Henk J. ;
Cappelli, Luca ;
Coronado, Eugenio ;
Graetzel, Michael ;
Orti, Enrique ;
Costa, Ruben D. ;
Viruela, Pedro M. ;
Nazeeruddin, Md. K. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (46) :14786-14787
[4]   Deep-Red-Emitting Electrochemical Cells Based on Heteroleptic Bis-chelated Ruthenium(II) Complexes [J].
Bolink, Henk J. ;
Coronado, Eugenio ;
Costa, Ruben D. ;
Gavina, Pablo ;
Orti, Enrique ;
Tatay, Sergio .
INORGANIC CHEMISTRY, 2009, 48 (09) :3907-3909
[5]   Efficient and stable solid-state light-emitting electrochemical cell using tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) hexafluorophosphate [J].
Bolink, HJ ;
Cappelli, L ;
Coronado, E ;
Grätzel, M ;
Nazeeruddin, MK .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (01) :46-47
[6]   Observation of electroluminescence at room temperature from a ruthenium(II) bis-terpyridine complex and its use for preparing light-emitting electrochemical cells [J].
Bolink, HJ ;
Cappelli, L ;
Coronado, E ;
Gaviña, P .
INORGANIC CHEMISTRY, 2005, 44 (17) :5966-5968
[7]   Carbazole compounds as host materials for triplet emitters in organic light-emitting diodes:: Tuning the HOMO level without influencing the triplet energy in small molecules [J].
Brunner, K ;
van Dijken, A ;
Börner, H ;
Bastiaansen, JJAM ;
Kiggen, NMM ;
Langeveld, BMW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (19) :6035-6042
[8]   Lanthanide NIR luminescence for telecommunications, bioanalyses and solar energy conversion [J].
Buenzli, Jean-Claude G. ;
Eliseeva, Svetlana V. .
JOURNAL OF RARE EARTHS, 2010, 28 (06) :824-842
[9]   Aggregation-induced emission of ruthenium(II) polypyridyl complex [Ru(bpy)2(pzta)]2+ [J].
Chen, Yu ;
Xu, Wen-Chao ;
Kou, Jun-Feng ;
Yu, Bo-Le ;
Wei, Xu-Hui ;
Chao, Hui ;
Ji, Liang-Nian .
INORGANIC CHEMISTRY COMMUNICATIONS, 2010, 13 (10) :1140-1143
[10]   Luminescent Ionic Transition-Metal Complexes for Light-Emitting Electrochemical Cells [J].
Costa, Ruben D. ;
Orti, Enrique ;
Bolink, Henk J. ;
Monti, Filippo ;
Accorsi, Gianluca ;
Armaroli, Nicola .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (33) :8178-8211