Enhanced thermoelectric properties of screen-printed Bi0.5Sb1.5Te3 and Bi2Te2.7Se0.3 thick films using a post annealing process with mechanical pressure

2017 ◽  
Vol 5 (33) ◽  
pp. 8559-8565 ◽  
Author(s):  
Hyeongdo Choi ◽  
Sun Jin Kim ◽  
Yongjun Kim ◽  
Ju Hyung We ◽  
Min-Wook Oh ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Screen Printing ◽  
Thick Films ◽  
Annealing Process ◽  
Mechanical Pressure ◽  
Printing Process ◽  
Post Annealing ◽  
P Type ◽  
Screen Printed

We report on a TE device composed of p-type Bi0.5Sb1.5Te3 and n-type Bi2Te2.7Se0.3 TE materials prepared using a screen-printing process.

scholarly journals Chitosan-based enzyme ink for screen-printed bioanodes

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20550-20556
Author(s):  
Isao Shitanda ◽  
Kanako Oda ◽  
Noya Loew ◽  
Hikari Watanabe ◽  
Masayuki Itagaki ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Mesoporous Carbon ◽  
Screen Printing ◽  
Printing Process ◽  
One Step ◽  
Screen Printed

Bio-composite inks based on magnesium oxide (MgO)-templated mesoporous carbon (MgOC) and chitosan cross-linked with genipin for one-step screen-printing process.

Highly Doped P-Type, N-Type CdS Thin Films and Diodes

1993 ◽  
Vol 329 ◽  
Author(s):  
Wen P. Shen ◽  
Hoi S. Kwok
Keyword(s):  
Thin Films ◽  
Doping Concentration ◽  
Annealing Process ◽  
Laser Deposition ◽  
Post Annealing ◽  
Gaas Substrates ◽  
Cds Thin Film ◽  
Good Crystalline Quality ◽  
Cds Thin Films ◽  
P Type

AbstractCdS thin films with doping concentration as high as 1017 cm-3 for p-type or 1021 cm-3 for n-type were achieved by pulsed excimer laser deposition without any post-annealing process. These films were grown on InP or GaAs substrates with good crystalline quality. By using this technique, CdS thin film p-n junctions were produced successfully.

Study of self-actuated screen-printed PZT-cantilevers

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000105-000110
Author(s):  
Riadh LAKHMI ◽  
Christophe CASTILLE ◽  
Hélène DEBEDA ◽  
Mario MAGLIONE ◽  
Claude LUCAT
Keyword(s):  
Screen Printing ◽  
Sintering Temperature ◽  
Sacrificial Layer ◽  
Longitudinal Vibration ◽  
Ferroelectric Ceramics ◽  
Mechanical Pressure ◽  
Bending Mode ◽  
Resonance Frequencies ◽  
Cantilever Structure ◽  
Screen Printed

Usually, resonating cantilevers come from silicon technology and are generally activated with pure bending mode. In this work, we suggest to combine high sensitive cantilever structure with full self-actuated piezoelectric thick-film for high electrical-mechanical coupling. This cantilever is realized through the screen-printing deposition associated with a sacrificial layer. The beam part of the cantilever is composed of a PZT layer between two gold electrodes. Optimum performances of ferroelectric ceramics strongly rely on their composition and microstructure which imply generally the use of mechanical pressure and very high sintering temperature. These conditions are not compatible with the screen-printing process. As already shown with ceramics, addition of eutectic composition Li2CO3-CuO-Bi2O3 or borosilicate glass-frit to PZT powder and application of isostatic pressure, the sintering temperature of cantilevers may be decreased. Screen-printed piezoelectric samples are thus fired at 850°C, 900°C and 950°C. SEM analyses show the densification of the microstructure while increasing the sintering temperature. Electrical and mechanical characterizations are then achieved after poling the self-actuated cantilevers of different dimensions. In addition to the bending mode observed with a vibrometer, we pointed out other resonances related to the piezoelectric properties of the PZT cantilevers. Indeed, the three first orders of “in-plane” 31-longitudinal vibration mode and the first order “out-of-plane” 33-thickness resonance mode are revealed. The resonance frequencies deduced from analytical modeling are linked to the cantilever dimensions and thus confirm the experimental results. The piezoelectric parameters of PZT cantilevers approach those of ceramics. Quality factors of 300 to 400 associated to the unusual 31-longitudinal mode make self-actuated screen-printed PZT cantilevers good candidates for detection in liquid and gaseous media.

scholarly journals The study of the screen printing quality depending on the surface to be printed

2018 ◽  
Vol 178 ◽  
pp. 03015
Author(s):  
Viorica Cazac ◽  
Jana Cîrja ◽  
Emilia Balan ◽  
Cristina Mohora
Keyword(s):  
Screen Printing ◽  
Printing Process ◽  
Printing Quality ◽  
Mesh Screen ◽  
Study Results ◽  
Different Types ◽  
Composition Structure ◽  
Screen Printed

This paper presents the study results regarding the analysis of the screen printing quality on different types of materials. The quality of the screen printing is determined by several particularities of the screen printing process such as: the type of mesh, screen ruling, ink viscosity, raster spacing, etc. The material which is supposed to be printed is as important as the particularities of the screen printing process itself. The composition, structure and features of the printed items as well as the composition, viscosity and other ink properties, all together determine the quality of the screen printed matter.

Effects of post-annealing on thermoelectric properties of p-type CoSb3 grown by the vertical Bridgman method

2005 ◽  
Vol 386 (1-2) ◽  
pp. 228-233 ◽  
Author(s):  
M. Akasaka ◽  
T. Iida ◽  
G. Sakuragi ◽  
S. Furuyama ◽  
M. Noda ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Bridgman Method ◽  
Vertical Bridgman Method ◽  
Post Annealing ◽  
Vertical Bridgman ◽  
P Type

scholarly journals Screen Printed Metallization of Silicon Solar Cells

1980 ◽  
Vol 7 (1-3) ◽  
pp. 107-111 ◽  
Author(s):  
L. Frisson ◽  
Ph. Lauwers ◽  
R. Mertens ◽  
R. Van Overstraeten ◽  
R. Govaerts
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Contact Resistance ◽  
Process Optimization ◽  
Screen Printing ◽  
Silicon Solar Cells ◽  
Printing Process ◽  
Screen Printed

This paper presents a screen printing process for the metallization of silicon solar cells. The physics and construction of a classical solar cell are reviewed. The results obtained with a screen printing process are comparable with other, more expensive technologies. This technology does not introduce an additional contact resistance on silicon. The process optimization and the influence of different parameters are discussed.

Enhanced thermoelectric properties of (015) plane-oriented n-type Bi2Se0.5Te2.5 films with wide temperature range stability

CrystEngComm ◽  
2020 ◽  
Vol 22 (45) ◽  
pp. 7790-7793
Author(s):  
Lili Cao ◽  
Hongli Gao ◽  
Min Miao
Keyword(s):  
Thermoelectric Properties ◽  
Wide Temperature Range ◽  
Annealing Process ◽  
Temperature Range ◽  
Post Annealing

Enhanced thermoelectric properties with wide temperature range stability are achieved through a facile post-annealing process.

scholarly journals Printed PZT Thick Films Implemented for Functionalized Gas Sensors

2018 ◽  
Vol 777 ◽  
pp. 158-162
Author(s):  
Maria Isabel Rua-Taborda ◽  
Onuma Santawitee ◽  
Angkana Phongphut ◽  
Bralee Chayasombat ◽  
Chanchana Thanachayanont ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Sensors ◽  
Screen Printing ◽  
Lower Cost ◽  
Thick Films ◽  
Printing Process ◽  
Coating Deposition ◽  
Selective Coating ◽  
Ceramic Process

Attractive for MEMS, PZT thick films are often microstructured on Si supporting platforms to span the gap between ceramics and thin film technologies. Printing process might lead to lower cost than ceramic process to open routes for MEMS applications. In this paper processing by screen-printing of Au/PZT/Au thick-films supported on alumina or completely released from the substrate are described. Investigations of the film microstructures nevertheless show lower densification than those of bulk ceramics. Prior to selective coating deposition, routes to improve the reduction of the film’s porosity are proposed.

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