Cyanophenyl spiro[acridine-9,9′-fluorene]s as simple structured hybridized local and charge-transfer-based ultra-deep blue emitters for highly efficient non-doped electroluminescent devices (CIEy 〈 0.05)

2021 ◽  
Author(s):  
Taweesak Sudyoadsuk ◽  
Sujinda Petdee ◽  
Chokchai Kaiyasuan ◽  
Chaiyon Chaiwai ◽  
Praweena Wongkaew ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Quantum Efficiency ◽  
Internal Quantum Efficiency ◽  
Electroluminescent Devices ◽  
Highly Efficient ◽  
Deep Blue ◽  
Successful Approach ◽  
Blue Emitters

The hybridized local and charge-transfer (HLCT) excited state is a successful approach to accomplish both high external and internal quantum efficiency. To attain deep blue emissive HLCT emitters, two cyanophenyl...

Novel Carbazole-based Multifunctional Materials with Hybridized Local and Charge-Transfer Excited State Acting as Deep Blue Emitters and Phosphorescent Hosts for Highly Efficient Organic Light-Emitting Diodes

2021 ◽  
Author(s):  
Haitao Zhou ◽  
Mengna Yin ◽  
Zhenhong Zhao ◽  
Yanqin Miao ◽  
Xin Jin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Multifunctional Materials ◽  
Light Emitting ◽  
Highly Efficient ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

In this work, two carbazole- and benzo[d]oxazole-based novel multifunctional materials with hybridized local and charge-transfer (HLCT) characteristic, namely OCI and OCT, which could act as deep-blue fluorophors and phosphorescent hosts,...

Luminescent columnar discotics as highly efficient emitter in pure deep-blue OLEDs with an external quantum efficiency of 4.7%

Soft Matter ◽  
2021 ◽  
Author(s):  
Santanu Kumar Pal ◽  
Joydip De ◽  
Ishan Sarkar ◽  
Rohit A. K. Yadav ◽  
Indu Bala ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Room Temperature ◽  
Highly Efficient ◽  
Deep Blue ◽  
Blue Emitters ◽  
Solution Processable ◽  
Derivatives Of

Development of materials that serve as efficient blue emitters in solution-processable OLEDs is challenging. In this communication, we report three derivatives of C3-symmetric 1,3,5-tris(thien-2-yl)benzene-based highly luminescent room temperature columnar discotic...

Deep-blue fluorescent emitter based on a 9,9-dioctylfluorene bridge with a hybridized local and charge-transfer excited state for organic light-emitting devices with EQE exceeding 8%

2020 ◽  
Vol 8 (40) ◽  
pp. 14117-14124
Author(s):  
Xing Liu ◽  
Wen Liu ◽  
Wu Dongyu ◽  
Xiaozhen Wei ◽  
Long Wang ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Blue Emission ◽  
Emission Peak ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Deep Blue ◽  
Organic Light

The doped device of TPA-DFCP exhibits excellent deep-blue emission with the EL emission peak at 436 nm and the CIE coordinates at (0.153, 0.077), and excellent EL performance with a maximum external quantum efficiency (EQE) of 8.30%.

Internal quantum efficiency of highly-efficient InxGa1−xN-based near-ultraviolet light-emitting diodes

2003 ◽  
Vol 83 (24) ◽  
pp. 4906-4908 ◽  
Author(s):  
Satoshi Watanabe ◽  
Norihide Yamada ◽  
Masakazu Nagashima ◽  
Yusuke Ueki ◽  
Chiharu Sasaki ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Internal Quantum Efficiency ◽  
Light Emitting ◽  
Highly Efficient ◽  
Near Ultraviolet ◽  
Ultraviolet Light Emitting Diodes

Highly efficient all solution-processed non-doped deep-blue electroluminescent devices from oligocarbazole-end-capped spirobifluorenes

2020 ◽  
Vol 4 (10) ◽  
pp. 2943-2953 ◽  
Author(s):  
Pattarawadee Therdkatanyuphong ◽  
Chokchai Kaiyasuan ◽  
Pongsakorn Chasing ◽  
Terdkait Kaewpuang ◽  
Thanyarat Chawanpunyawat ◽  
...  
Keyword(s):  
Solution Processed ◽  
Electroluminescent Devices ◽  
Highly Efficient ◽  
Deep Blue

Oligocarbazole end-capped spirobifluorenes as non-doped deep-blue emissive layers in all solution-processed OLEDs exhibit one of the best all solution-processed deep-blue OLEDs reported to date.

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