Koala Tech Inc.

Kyushu University

Kyulux, Inc.

Kenichi Goushi

Chihaya Adachi

Toshinori Matsushima

Sangarange Don Atula Sandanayaka

Fatima Bencheikh

Takashi Fujihara

Jean-Charles Ribierre

Kou Yoshida

Hiroko Nomura

Takuma Yasuda

Hajime Nakanotani

Katsuyuki Shizu

Ryosuke Kondo

Hiroki Uoyama

Junichi Nishide

Jyunichi Nishide

Yuta Hirayama

Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.

Continuous-wave organic thin-film distributed feedback laser and electrically driven organic semiconductor laser diode

Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of exciton density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.

Current-injection organic semiconductor laser diode, method for producing same and program

Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of excitor density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.

Current-injection organic semiconductor laser diode, meihod for producing same and program

An organic light-emitting device having a light-emitting layer containing a compound represented by the general formula below has a high light emission efficiency. In the general formula, at least one of Rto Rrepresents a cyano group, at least one of Rto Rrepresents a 9-carbazolyl group, a 1,2,3,4-tetrahydro-9-carbazolyl group, a 1-indolyl group or a diarylamino group, and the balance of Rto Rrepresents a hydrogen atom or a substituent. 

Organic light-emitting device, and light-emitting material and compound used therefor

An organic electroluminescent device comprising at least two organic layers including a light emitting layer () and a delayed fluorescent exciplex layer () containing a donor compound and an acceptor compound, between a pair of electrodes () is highly efficient in formation of a singlet excited state and enables high light emission efficiency.

Organic electroluminescent device

A delayed fluorescence material containing a mixture of an acceptor compound and a donor compound that satisfies the following formulae (1) to (4):&#x3e;0.2 eV&#x2003;&#x2003;(1)&#x2267;0.2 eV&#x2003;&#x2003;(2)|LUMO|&#x3e;2.0 eV&#x2003;&#x2003;(3)|HOMO|&#x2266;5.3 eV&#x2003;&#x2003;(4)wherein Trepresents the excited triplet energy of the acceptor compound; Trepresents the excited triplet energy defined of the donor compound; Srepresents the excited singlet energy of the exciplex; LUMOrepresents the energy level of LUMO of the acceptor compound; and HOMOrepresents the energy level of HOMO of the donor compound.

Delayed fluorescence material and organic electroluminescence device

Growing community of inventors

Fukuoka, Japan

Kenichi Goushi