Investigation of valence electron excitation and plasmonic enhancement in sputter grown NMZO thin films: For energy harvesting applications

2019 ◽  
Vol 88 ◽  
pp. 372-377
Author(s):  
Vivek Garg ◽  
Brajendra S. Sengar ◽  
Vishnu Awasthi ◽  
Amitesh Kumar ◽  
Sushil K. Pandey ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Valence Electron ◽  
Electron Excitation ◽  
Plasmonic Enhancement

Valence electron energy loss spectroscopy in reflection geometry

1989 ◽  
Vol 47 ◽  
pp. 378-379
Author(s):  
J. Liu ◽  
J. M. Cowley
Keyword(s):  
Energy Loss ◽  
Valence Electron ◽  
Interband Transition ◽  
Specular Reflection ◽  
Three Dimensional ◽  
Electron Excitation ◽  
Transmission Electron ◽  
Yield Information ◽  
Valence Bands ◽  
Excitation Processes

The low energy loss region of a EELS spectrum carries information about the valence electron excitation processes (e.g., collective excitations for free electron like materials and interband transitions for insulators). The relative intensities and the positions of the interband transition energy loss peaks observed in EELS spectra are determined by the joint density of states (DOS) of the initial and final states of the excitation processes. Thus it is expected that EELS in reflection mode could yield information about the perturbation of the DOS of the conduction and valence bands of the bulk crystals caused by the termination of the three dimensional periodicity at the crystal surfaces. The experiments were performed in a Philipps 400T transmission electron microscope operated at 120 kV. The reflection EELS spectra were obtained by a Gatan 607 EELS spectrometer together with a Tracor data acquisition system and the resolution of the spectrometer was about 0.8 eV. All the reflection spectra are obtained from the specular reflection spots satisfying surface resonance conditions.

Self-polarized piezoelectric thin films: preparation, formation mechanism and application

2015 ◽  
Vol 3 (34) ◽  
pp. 8926-8931 ◽  
Author(s):  
Baozhang Li ◽  
Chengyi Xu ◽  
Feifei Zhang ◽  
Jianming Zheng ◽  
Chunye Xu
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Formation Mechanism ◽  
Pressure Sensor ◽  
Salt Solution ◽  
Pvdf Film ◽  
Piezoelectric Thin Films

A PVDF film prepared on a salt solution is discovered to be self-polarized and is successfully applied in energy harvesting and pressure sensor.

scholarly journals Formation and Characterization of Various ZnO/SiO2-Stacked Layers for Flexible Micro-Energy Harvesting Devices

2018 ◽  
Vol 8 (7) ◽  
pp. 1127 ◽  
Author(s):  
Chongsei Yoon ◽  
Buil Jeon ◽  
Giwan Yoon
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Indium Tin Oxide ◽  
Control Sample ◽  
Single Layer ◽  
Rf Magnetron Sputtering ◽  
Device Performance ◽  
Polyethylene Naphthalate ◽  
Flexible Devices ◽  
Energy Harvesting Devices

In this paper, we present a study of various ZnO/SiO2-stacked thin film structures for flexible micro-energy harvesting devices. Two groups of micro-energy harvesting devices, SiO2/ZnO/SiO2 micro-energy generators (SZS-MGs) and ZnO/SiO2/ZnO micro-energy generators (ZSZ-MGs), were fabricated by stacking both SiO2 and ZnO thin films, and the resulting devices were characterized. With a particular interest in the fabrication of flexible devices, all the ZnO and SiO2 thin films were deposited on indium tin oxide (ITO)-coated polyethylene naphthalate (PEN) substrates using a radio frequency (RF) magnetron sputtering technique. The effects of the thickness and/or position of the SiO2 films on the device performance were investigated by observing the variations of output voltage in comparison with that of a control sample. As a result, compared to the ZnO single-layer device, all the ZSZ-MGs showed much better output voltages, while all the SZS-MG showed only slightly better output voltages. Among the ZSZ-MGs, the highest output voltages were obtained from the ZSZ-MGs where the SiO2 thin films were deposited using a deposition power of 150 W. Overall, the device performance seems to depend significantly on the position as well as the thickness of the SiO2 thin films in the ZnO/SiO2-stacked multilayer structures, in addition to the processing conditions.

Flexible Piezoelectric Energy-Harvesting Exploiting Biocompatible AlN Thin Films Grown onto Spin-Coated Polyimide Layers

2018 ◽  
Author(s):  
Luciana Algieri ◽  
Maria Teresa Todaro ◽  
Francesco Guido ◽  
Vincenzo Mastronardi ◽  
Denis Desmaële ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy

Solution phase fabrication of photoactive Cu2BaSnS4 thin films for solar energy harvesting

2019 ◽  
Vol 24 (2) ◽  
pp. 305-311 ◽  
Author(s):  
Suresh Kumar M. ◽  
Sreejith P. Madhusudanan ◽  
Sidhanth C. Kanth ◽  
Kallol Mohanta ◽  
Sudip K. Batabyal
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Solar Energy ◽  
Solution Phase ◽  
Solar Energy Harvesting

From energy harvesting to topologically insulating behavior: ABO3-type epitaxial thin films and superlattices

2020 ◽  
Vol 8 (44) ◽  
pp. 15575-15596
Author(s):  
Haoming Wei ◽  
Chao Yang ◽  
Yangqing Wu ◽  
Bingqiang Cao ◽  
Michael Lorenz ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Perovskite Oxides ◽  
Quantum States ◽  
Epitaxial Thin Films ◽  
Research Status ◽  
Energy Harvesters

The current research status of perovskite oxides in fabricating energy harvesters and designing new quantum states is reviewed.

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