scholarly journals Enhancement of Jc by doping silver in grain boundaries of YBa2Cu3Oy polycrystals with solid-state diffusion method

2003 ◽  
Vol 93 (4) ◽  
pp. 2292-2294 ◽  
Author(s):  
C. H. Cheng ◽  
Y. Zhao
Keyword(s):  
Solid State ◽  
Grain Boundaries ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
State Diffusion

Luminescence and defect studies of Ce3+ doped CaS phosphor synthesized via solid state diffusion method

2006 ◽  
Vol 131 (1-3) ◽  
pp. 195-199 ◽  
Author(s):  
Vijay Singh ◽  
T.K. Gundu Rao ◽  
Jun-Jie Zhu ◽  
Manoj Tiwari
Keyword(s):  
Solid State ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
State Diffusion

GaAs shallow homojunction solar cells fabricated on thin epitaxial films by a simple Zn solid state diffusion method

1986 ◽  
Vol 14 (1) ◽  
pp. 29-49 ◽  
Author(s):  
M. Garozzo ◽  
A. Parretta ◽  
G. Maletta ◽  
V. Adoncecchi ◽  
M. Gentili
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Epitaxial Films ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
State Diffusion

Gold to aurostibite transformation and formation of Au-Ag-Sb phases: the Krásná Hora deposit, Czech Republic

2017 ◽  
Vol 81 (4) ◽  
pp. 987-999 ◽  
Author(s):  
Jiří Zachariáš ◽  
Matěj Němec
Keyword(s):  
Czech Republic ◽  
Solid State ◽  
Grain Boundaries ◽  
Native Gold ◽  
Diffusion Processes ◽  
Solid State Diffusion ◽  
State Diffusion

AbstractRare phases of the Au–Ag–Sb system were recognized in the Krásná Hora Sb-Au deposit (Sb 1.5–3 wt.%; Au 3–5 ppm), Czech Republic which correspond to auriferous dyscrasite (up to 7 at.% Au), auriferous allargentum (up to 34 at.% Au), and an unnamed phase with composition similar to the eutectics (E1, E2) of the experimental Au–Ag–Sb system. The dominant ore mineral is stibnite with rare native antimony, native gold and a Ag-Au alloy. Textural relationships are well established: stibnite (early) →gold → aurostibite → native antimony (late). Gold is present in four generations: Au-1 (0–15 at.% Ag) is the most abundant type; Au-2 (20–70 at.% Ag) forms thin rims along intra-grain boundaries of Au-1; Au-3 and Au-4 are rare and almost pure (∼0 at.% Ag). The formationof most of the Au-2 and of Au-Ag-Sb phases is associated with Ag-mobilization coupled with the Au-1 to aurostibite transformation via dissolution-precipitation and solid-state diffusion processes at temperatures <200°C.

Boron-doped Nanodiamond Powder Prepared by Solid-state Diffusion Method

2015 ◽  
Vol 44 (5) ◽  
pp. 627-629 ◽  
Author(s):  
Takeshi Kondo ◽  
Narumi Okada ◽  
Yuki Yamaguchi ◽  
Junichi Urai ◽  
Tatsuo Aikawa ◽  
...  
Keyword(s):  
Solid State ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
Boron Doped ◽  
State Diffusion

Exafs Studies of Grain Boundary Diffusion and Segregation

1986 ◽  
Vol 77 ◽  
Author(s):  
S. M. Heald ◽  
H. Chen ◽  
J. M. Tranquada
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Boundary Diffusion ◽  
Structural Information ◽  
Solid State Diffusion ◽  
Interface Reactions ◽  
Tin Bronze ◽  
State Diffusion

ABSTRACTThe dominant pathway for thin film interdiffusion and interface reactions is often via grain boundaries. We have made EXAFS measurements of grain boundary constituents for two systems: interdiffusion in Ag-Au bilay-ers and solid state reaction of Nb with a copper-tin bronze to form Nb3Sn. The Ag-Au results indicate that Au in saturated Ag grain boundaries has an environment similar to a dilute Au in Ag solution with reduced coordination. For the Nb-bronze reaction, the results for the Cu environment indicate distinct changes in the grain boundary environment when small amounts of Ti, Hf, Zr, and Ta are added to the starting Nb. Both results demonstrate the ability of EXAFS to probe grain boundary environments, and to provide important structural information in understanding solid state diffusion and interdiffusion in thin film systems.

Growth of Silicon Carbide Filaments in Multicrystalline Silicon for Solar Cells

2009 ◽  
Vol 156-158 ◽  
pp. 35-40 ◽  
Author(s):  
Hans Joachim Möller ◽  
Claudia Funke ◽  
Jan Bauer ◽  
S. Köstner ◽  
H. Straube ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Solar Cells ◽  
Solid State ◽  
Grain Boundaries ◽  
Bulk Material ◽  
Casting Process ◽  
Carbon Diffusion ◽  
Solid State Diffusion ◽  
State Diffusion ◽  
Solid Liquid Interface

This work introduces two different approaches to explain the growth of silicon carbide (SiC) filaments, found in the bulk material and in grain boundaries of solar cells made from multicrystalline (mc) silicon. These filaments are responsible for ohmic shunts. The first model proposes that the SiC filaments grow at the solid-liquid interface of the mc-Si ingot, whereas the second model proposes a growth due to solid state diffusion of carbon atoms in the solid fraction of the ingot during the block-casting process. The melt interface model can explain quantitatively the observed morphologies, diameters and mean distances of SiC filaments. The modeling of the temperature- and time-dependent carbon diffusion to a grain boundary in the cooling ingot shows that solid state diffusion based on literature data is not sufficient to transport the required amount of approximately 3.4  1017 carbon atoms per cm2 to form typical SiC filaments found in grain boundaries of mc-Si for solar cells. However, possible mechanisms are discussed to explain an enhanced diffusion of carbon to the grain boundaries.

A new high sensitivity Na2LiPO4:Eu OSL phosphor

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3474-3481 ◽  
Author(s):  
P. D. Sahare ◽  
Manveer Singh ◽  
Pratik Kumar
Keyword(s):  
Solid State ◽  
High Sensitivity ◽  
Optically Stimulated Luminescence ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
State Diffusion

A new high sensitivity Na2LiPO4:Eu optically stimulated luminescence dosimeter (OSLD) material was prepared by a simple solid-state diffusion method.

scholarly journals Photoluminescence (PL) properties of NaLi2PO4:Eu3+ phosphor for solid state lighting application

YMER Digital ◽  
2021 ◽  
Vol 20 (11) ◽  
pp. 91-98
Author(s):  
V.R. Panse ◽  
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
Prepared Phosphor ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
State Diffusion ◽  
Lighting Application

The polycrystalline NaLi2PO4:xEu (x=0.001,0.002,0.005,0.01 and 0.02) phosphors were successfully synthesized via modified solid state diffusion method [MSSDM]. The structural of prepared phosphor was confirmed by using XRD (X-ray diffraction) technique. Additionally, the photoluminescence (PL) behaviors of NaLi2PO4:xEu phosphor was studied.The XRD pattern of prepared phosphor is well matched with JCPDS file.The PL excitation of prepared phosphor was monitored at 618nm while emission was monitored at 393 nm. The effect of different concentrations of Eu3+ ions in NaLi2PO4 phosphor was studies and optimum PL intensity was obtained at x=0.005 mol. of Eu3+ ion. The CIE co-ordinates were calculated and obtained in orange- red region.

Luminescence and dosimetric characteristics of microcrystalline SrB4O7:Eu3+ synthesized by solid state diffusion method

2021 ◽  
Author(s):  
Neyaz Ali ◽  
P. D. Sahare ◽  
Avinash R. Kachere ◽  
Prashant M. Kakade ◽  
Nandkumar T. Mandlik ◽  
...  
Keyword(s):  
Solid State ◽  
Diffusion Method ◽  
Solid State Diffusion ◽  
State Diffusion
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