Nanoplasmonically-engineered random lasing in organic semiconductor thin films

2017 ◽  
Vol 2 (5) ◽  
pp. 261-266 ◽  
Author(s):  
Esmaeil Heydari ◽  
Isabel Pastoriza-Santos ◽  
Luis M. Liz-Marzán ◽  
Joachim Stumpe
Keyword(s):  
Thin Films ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Gain Medium ◽  
Stimulated Emission ◽  
Plasmonic Nanoparticles ◽  
Core Shell ◽  
Random Lasing ◽  
Emission Enhancement ◽  
Semiconductor Thin Films

We demonstrate plasmonically nano-engineered coherent random lasing and stimulated emission enhancement in a hybrid gain medium of organic semiconductors doped with core–shell plasmonic nanoparticles.

Novel organic light-emitting transistors with PN-heteroboundary carrier recombination sites fabricated by lift-off patterning of organic semiconductor thin films

2007 ◽  
Vol 22 (11) ◽  
pp. 2982-2986 ◽  
Author(s):  
Naotoshi Suganuma ◽  
Noriyuki Shimoji ◽  
Yoshiaki Oku ◽  
Kazumi Matsushige
Keyword(s):  
Thin Films ◽  
Integrated Circuits ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Light Emitting ◽  
Carrier Recombination ◽  
Organic Light ◽  
Semiconductor Thin Films ◽  
Lift Off ◽  
P Type

The authors have devised a novel organic light-emitting transistor (OLET) with a PN-heteroboundary combined with hole and electron transport materials (in other words, p-type and n-type organic semiconductors) along carrier channels. In this device, a clear modulation of the current and luminance with the gate voltage was observed. A luminance of 100 cd/m2 or more has been observed at the source–source voltage of 15 V with the turn-on voltage of 10 V or less, which is lower than that of OLETs based on a single organic material. The horizontal PN-heteroboundary structure has been implemented for the first time by using the photolithographic patterning of organic semiconductor thin films. This patterning technique can be applied to the fabrication of not only the OLETs reported in this work, but also to organic integrated circuits or organic displays.

Measurement of the triplet exciton diffusion length in organic semiconductors

2019 ◽  
Vol 7 (19) ◽  
pp. 5695-5701 ◽  
Author(s):  
Deepesh Rai ◽  
Russell J. Holmes
Keyword(s):  
Thin Films ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Diffusion Length ◽  
Triplet Exciton ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Semiconductor Thin Films ◽  
Quenching Efficiency ◽  
Triplet Excitons

We develop a methodology to measure the diffusion of dark triplet excitons in organic semiconductor thin films using a phosphorescent sensitizer-based approach that explicitly quantifies quenching efficiency by varying sensitizer concentration.

Quantitative Image Analysis of Fractal-like Thin Films of Organic Semiconductors

2018 ◽  
Author(s):  
Weikun Zhu ◽  
Erfan Mohammadi ◽  
Ying Diao
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Image Analysis ◽  
Fractal Dimension ◽  
Organic Semiconductors ◽  
Film Growth ◽  
Electronic Device ◽  
Significant Control ◽  
Semiconductor Thin Films ◽  
Two Parameters

Morphology modulation offers significant control over organic electronic device performance. However, morphology quantification has been rarely carried out via image analysis. In this work, we designed a MATLAB program to evaluate two key parameters describing morphology of small molecule semiconductor thin films: fractal dimension and film coverage. We then employ this program in a case study of meniscus-guided coating of 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C<sub>8</sub>-BTBT) under various conditions to analyze a diverse and complex morphology set. The evolution of morphology in terms of fractal dimension and film coverage was studied as a function of coating speed. We discovered that combined fractal dimension and film coverage can quantitatively capture the key characteristics of C<sub>8</sub>-BTBT thin film morphology; change of these two parameters further inform morphology transition. Furthermore, fractal dimension could potentially shed light on thin film growth mechanisms.

Annealing Behavior with Thickness Hindered Nucleation in Small-Molecule Organic Semiconductor Thin Films

2019 ◽  
Vol 19 (7) ◽  
pp. 3777-3784
Author(s):  
Jakub Rozbořil ◽  
Katharina Broch ◽  
Roland Resel ◽  
Ondřej Caha ◽  
Filip Münz ◽  
...  
Keyword(s):  
Thin Films ◽  
Small Molecule ◽  
Organic Semiconductor ◽  
Annealing Behavior ◽  
Semiconductor Thin Films

scholarly journals Rubbing induced reversible fluorescence switching in thiophene derivate organic semiconductor film by mechanical amorphisation

2021 ◽  
Author(s):  
Massimiliano Cavallini ◽  
Ilse Manet ◽  
Marco Brucale ◽  
Laura Favaretto ◽  
Manuela Melucci ◽  
...  
Keyword(s):  
Thin Films ◽  
Organic Semiconductor ◽  
Semiconductor Film ◽  
Semiconductor Thin Films ◽  
Fluorescence Switching ◽  
Polymorphic Nature

Here, we applied rubbing on thiophene derivate organic semiconductor thin films to induce a reversible mechanical amorphisation. Amorphisation is associated with fluorescence switching, which is regulated by the polymorphic nature...

scholarly journals Photon recycling in organic semiconductor thin films

2021 ◽  
Author(s):  
Zhongkai Cheng ◽  
Nasir Javed ◽  
Deirdre O'Carroll
Keyword(s):  
Thin Films ◽  
Organic Semiconductor ◽  
Semiconductor Thin Films ◽  
Photon Recycling

scholarly journals Fabrication of Patterned Organic Semiconductor Thin Films by the Synergy of Marangoni and Coffee-Ring Effects

2019 ◽  
Vol 35 (11) ◽  
pp. 1259-1266
Author(s):  
Ziang WANG ◽  
◽  
Hang GUO ◽  
Xin RONG ◽  
Guifang DONG ◽  
...  
Keyword(s):  
Thin Films ◽  
Organic Semiconductor ◽  
Coffee Ring ◽  
Semiconductor Thin Films
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