[17p-B6-1~16] 12.4 Organic light-emitting devices and organic transistors

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-B6-5] Development of ultraviolet organic semiconductor lasers

〇(M1)Yusei Kaya¹, Ayano Abe¹, Youhei Chitose⁶, Sebastien Chenais⁷, Cyril Poriel^2,4, Fabrice Mathevet^1,2,3, Chihaya Adachi^1,5 (1.Kyushu Univ. OPERA, 2.CNRS, 3.Sorbonne Univ., 4.Univ. of Rennes, 5.Kyushu Univ. I2CNER, 6.Kyushu Univ. CMS, 7.Sorbonne Paris North Univ.)

Keywords:

Organic Semiconductor Laser,Ultraviolet

We observed ASE oscillations with a UV wavelength of λ_ASE=368 nm and a threshold of E_th=85 μJ/cm² from a neat film of DSFIF-para-syn-tbu, a dispirofluorene-based molecule. This ASE oscillation wavelength is the shortest among the ones from organic solid-state non-crystalline thin films reported so far. This study aims to reduce the threshold by dispersion into optimal hosts. We will also investigate the dominant factor of ASE oscillation by analyzing optical properties and comparing with its isomers.