scholarly journals Snapshot Angle-Resolved Spectroscopy and Its Application for Study of Highly Efficient Polariton OLEDs

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1553
Author(s):  
Jui-Fen Chang ◽  
Shun-Yu Hong ◽  
Yi Chen ◽  
Yan-Rong Huang ◽  
Chung-Ken Lin ◽  
...  
Keyword(s):  
Thin Film ◽  
Imaging Technique ◽  
Mode Dispersion ◽  
Comprehensive Information ◽  
Long Time ◽  
High Emission ◽  
Simple Measurement ◽  
Reflectance Measurements ◽  
Thin Film Devices ◽  
Polariton Branch

The multifunctional snapshot angle-resolved spectroscopy (ARS) system capable of electroluminescence, photoluminescence, and reflectance measurements for thin film devices is developed based on the k-space imaging technique. Compared with the conventional goniometric ARS system, this snapshot spectroscopy system offers great advantages of rapid and simple measurement, suitable for characterizing thin film devices that are unstable or degraded under long-time or high-power driving conditions, such as OLEDs. We perform a detailed calibration of the snapshot system and show that the measured results closely match with those obtained using a goniometric system. Furthermore, we show the capabilities of the system with application in studying polariton OLEDs. The result provides comprehensive information on the polariton mode dispersion and emission distribution, and shows an effective radiative pumping of the lower polariton branch for high emission efficiency.

Characterization of Heat Propagation along Single Tin Dioxide Nanobelt Using the Thermoreflectance Method

2007 ◽  
Vol 1022 ◽  
Author(s):  
Xi Wang ◽  
Younes Ezzahri ◽  
James Christofferson ◽  
Yi Zhang ◽  
Ali Shakouri ◽  
...  
Keyword(s):  
Thin Film ◽  
Heat Transfer ◽  
High Resolution ◽  
Tin Dioxide ◽  
Imaging Technique ◽  
Thermal Conductance ◽  
Heat Propagation ◽  
Transfer Properties ◽  
Thin Film Devices

AbstractIn this paper, we studied heat transfer properties of a 230nm wide，450nm thick and 5.4 m long single tin dioxide nanobelt using non-contacted high resolution thermoreflectance imaging technique. Temperature difference across the nanobelt was created by attaching its both ends to a microfabricated thin film heater and sensor pair. High resolution thermal images of the nanobelt and thin film devices were obtained at variant pulsing current amplitudes and frequencies, which allowed us to study the inherent thermal conductance of the nanobelt. Thermal expansion induced thermoreflectance coefficient change is also discussed in this paper.

Galvanomagnetic thin film devices

1967 ◽  
Vol 34 (2) ◽  
pp. 97 ◽  
Author(s):  
H. Freller ◽  
K.G. Günther
Keyword(s):  
Thin Film ◽  
Thin Film Devices

scholarly journals Enabling bifacial thin film devices by developing a back surface field using CuxAlOy

Nano Energy ◽  
2021 ◽  
Vol 83 ◽  
pp. 105827
Author(s):  
Kamala Khanal Subedi ◽  
Adam B. Phillips ◽  
Niraj Shrestha ◽  
Fadhil K. Alfadhili ◽  
Anna Osella ◽  
...  
Keyword(s):  
Thin Film ◽  
Back Surface ◽  
Back Surface Field ◽  
Surface Field ◽  
Thin Film Devices

Transparent piezoelectric thin-film devices: Pb(Zr, Ti)O3 thin films on glass substrates

2021 ◽  
Vol 327 ◽  
pp. 112786
Author(s):  
Kazuki Ueda ◽  
Sang-Hyo Kweon ◽  
Hirotaka Hida ◽  
Yoshiharu Mukouyama ◽  
Isaku Kanno
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Glass Substrates ◽  
Piezoelectric Thin Film ◽  
Thin Film Devices

scholarly journals Implantable Thin Film Devices as Brain-Computer Interfaces: Recent Advances in Design and Fabrication Approaches

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 204
Author(s):  
Yuhao Zhou ◽  
Bowen Ji ◽  
Minghao Wang ◽  
Kai Zhang ◽  
Shuaiqi Huangfu ◽  
...  
Keyword(s):  
Thin Film ◽  
High Resolution ◽  
Future Research ◽  
Nano Fabrication ◽  
Computer Interfaces ◽  
Continuous Progress ◽  
Open Mesh ◽  
Remarkable Progress ◽  
Thin Film Devices ◽  
Made In

Remarkable progress has been made in the high resolution, biocompatibility, durability and stretchability for the implantable brain-computer interface (BCI) in the last decades. Due to the inevitable damage of brain tissue caused by traditional rigid devices, the thin film devices are developing rapidly and attracting considerable attention, with continuous progress in flexible materials and non-silicon micro/nano fabrication methods. Therefore, it is necessary to systematically summarize the recent development of implantable thin film devices for acquiring brain information. This brief review subdivides the flexible thin film devices into the following four categories: planar, open-mesh, probe, and micro-wire layouts. In addition, an overview of the fabrication approaches is also presented. Traditional lithography and state-of-the-art processing methods are discussed for the key issue of high-resolution. Special substrates and interconnects are also highlighted with varied materials and fabrication routines. In conclusion, a discussion of the remaining obstacles and directions for future research is provided.

Probe layer measurements of electroluminescence excitation in ac thin‐film devices

1981 ◽  
Vol 52 (5) ◽  
pp. 3590-3599 ◽  
Author(s):  
V. Marrello ◽  
L. Samuelson ◽  
A. Onton ◽  
W. Reuter
Keyword(s):  
Thin Film ◽  
Probe Layer ◽  
Thin Film Devices
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