Single-Crystal EPR Study of Triplet Excitons in Tetraethylammonium 2,3,5,6-Tetracyanobenzoquinonide. Evidence for an Interdimer Triplet Exciton

1995 ◽  
Vol 117 (9) ◽  
pp. 2547-2552 ◽  
Author(s):  
Rosemary C. Hynes ◽  
Paul J. Krusic ◽  
Keith F. Preston ◽  
Jerry J. Springs ◽  
Antony J. Williams ◽  
...  
Keyword(s):  
Single Crystal ◽  
Triplet Exciton ◽  
Triplet Excitons

EPR study of the triplet excitons in a single crystal of DDQ tetraethylammonium ion radical salt

1980 ◽  
Vol 51 (3) ◽  
pp. 381-387 ◽  
Author(s):  
Luigi Pasimeni ◽  
Marina Brustolon ◽  
Pier Luigi Zanonato ◽  
Carlo Corvaja
Keyword(s):  
Single Crystal ◽  
Radical Salt ◽  
Tetraethylammonium Ion ◽  
Triplet Excitons

Studies of Higher Triplet Exciton Bands through T-T Absorption in Naphthalene Single Crystal

1976 ◽  
Vol 40 (1) ◽  
pp. 250-257 ◽  
Author(s):  
Masahiro Higuchi ◽  
Takeyoshi Nakayama ◽  
Noriaki Itoh
Keyword(s):  
Single Crystal ◽  
Triplet Exciton

Triplet exciton formation in a benzophenone single crystal studied by picosecond time-resolved absorption spectroscopy

1997 ◽  
Vol 264 (6) ◽  
pp. 631-635 ◽  
Author(s):  
Ryuzi Katoh ◽  
Masahiro Kotani ◽  
Yoshinori Hirata ◽  
Tadashi Okada
Keyword(s):  
Single Crystal ◽  
Absorption Spectroscopy ◽  
Triplet Exciton ◽  
Time Resolved

Triplet-Triplet Upconversion in Organic Light- Emitting Diodes: Implications to Injection Lasing

2020 ◽  
Author(s):  
Atul Shukla ◽  
Monirul Hasan ◽  
Gangadhar Banappanavar ◽  
Viqar Ahmad ◽  
Jan Sobus ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Threshold Current ◽  
Triplet Exciton ◽  
Positive Contribution ◽  
Solid State Lasers ◽  
Light Emitting ◽  
Organic Solid ◽  
Exciton Annihilation ◽  
Fluorescence Material ◽  
Triplet Excitons

Abstract While significant progress has been made over last few years in the field of organic solid-state lasers, achieving lasing action from organic semiconductors under electrical excitation still remains a big challenge. One of the major barriers towards electrically pumped organic lasers are optical losses due to triplet excitons. In this work, we report both experimental and theoretical results that confirm positive contribution of triplet excitons for the scope of electrically driven organic laser. We studied a model fluorescence material, 9-(9-phenylcarbazole-3-yl)-10(naphthalene-1-yl) anthracene and reveals that the threshold current densities required to achieve lasing emission under electrical injection can be significantly reduced with the aid of triplet-triplet exciton upconversion processes. Furthermore, we demonstrate that, to achieve the best performance, the singlet-triplet exciton annihilation must be minimized. These results are unprecedented and provide a pathway towards development of new class of triplet-triplet upconversion materials for injection laser.

Optically induced detrapping of triplet excitons trapped at β-chloronaphthalene in naphthalene single crystal

1978 ◽  
Vol 28 (8) ◽  
pp. 625-628 ◽  
Author(s):  
A. Shirakawa ◽  
H. Asami ◽  
T. Nakayama ◽  
T. Chong ◽  
N. Itoh
Keyword(s):  
Single Crystal ◽  
Triplet Excitons ◽  
Optically Induced

Triplet exciton impact on photocurrent in diF TES ADT single crystal transistors

2020 ◽  
Author(s):  
Emily G. Bittle ◽  
Sebastian Engmann ◽  
Adam J. Biacchi ◽  
Emma Holland ◽  
John E. Anthony
Keyword(s):  
Single Crystal ◽  
Triplet Exciton
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