Thermal stability of Pd2Si and PdSi in thin film and in bulk diffusion couples

1982 ◽  
Vol 53 (1) ◽  
pp. 428-432 ◽  
Author(s):  
K. N. Tu
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Bulk Diffusion ◽  
Diffusion Couples ◽  
Thermal Stability Of

Nb Contacts to GaAs: Thermal Stability and Phase Formation

1987 ◽  
Vol 108 ◽  
Author(s):  
Kevin J. Schulz ◽  
Xiang-Yun Zheng ◽  
Y. Austin Chang
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Film Studies ◽  
Bulk Diffusion ◽  
Diffusion Path ◽  
Diffusion Couples ◽  
Compound Formation ◽  
The Stability ◽  
Binary Compounds ◽  
Thermal Stability Of

ABSTRACTThe applicability of Nb as a Schottky barrier on GaAs depends to a large extent on the thermal stability of the contacts. In this study, bulk diffusion couple and phase diagram studies in addition to thin film studies were completed to understand the stability of and the reactions at the Nb/GaAs interface. Nb thin films were deposited onto GaAs substrates by dc magnetron sputtering and were annealed in the temperature range 300 to 1000°C. Analysis was done using plan-TEM and XTEM. The Nb/GaAs interface was found to break down into a series of binary compounds above 500°C. Bulk diffusion couples annealed at 600°C were analyzed using an electron microprobe. The stable sequence of phases formed in the couple, i.e., the diffusion path, was determined and was used to rationalize the observed compound formation in the thin film contact system.

Thermal stability of PECVD W-B-N thin film as a diffusion barrier

1997 ◽  
Author(s):  
YongTae Kim ◽  
Dong J. Kim ◽  
Chang W. Lee ◽  
Jong-Wan Park
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Diffusion Barrier ◽  
Thermal Stability Of

Intrinsic Thermal Stability of Anisotropic Thin-Film Superconductors

1990 ◽  
Vol 112 (1) ◽  
pp. 10-15 ◽  
Author(s):  
M. I. Flik ◽  
C. L. Tien
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Stability Criterion ◽  
High Temperature Superconductors ◽  
Stability Criteria ◽  
Anisotropic Thermal Conductivity ◽  
Operating Current ◽  
Released Energy ◽  
The Stability ◽  
Thermal Stability Of

Intrinsic thermal stability denotes a situation where a superconductor can carry the operating current without resistance at all times after the occurrence of a localized release of thermal energy. This novel stability criterion is different from the cryogenic stability criteria for magnets and has particular relevance to thin-film superconductors. Crystals of ceramic high-temperature superconductors are likely to exhibit anisotropic thermal conductivity. The resultant anisotropy of highly oriented films of superconductors greatly influences their thermal stability. This work presents an analysis for the maximum operating current density that ensures intrinsic stability. The stability criterion depends on the amount of released energy, the Biot number, the aspect ratio, and the ratio of the thermal conductivities in the plane of the film and normal to it.

Improving the stabilities of organic solar cells via employing a mixed cathode buffer layer

2021 ◽  
Vol 95 (3) ◽  
pp. 30201
Author(s):  
Xi Guan ◽  
Yufei Wang ◽  
Shang Feng ◽  
Jidong Zhang ◽  
Qingqing Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Solar Cells ◽  
Mixed Layer ◽  
Organic Solar Cells ◽  
Buffer Layers ◽  
Commercial Development ◽  
Conversion Efficiencies ◽  
Thermal Stability Of ◽  
Cathode Buffer Layers

Organic solar cells (OSCs) have been fabricated using cathode buffer layers based on bathocuproine (BCP) and 4,4'-N,N'-dicarbazole-biphenyl (CBP). It is found that despite nearly same power conversion efficiencies, the bilayer of BCP/CBP shows increased thermal stability of device than the monolayer of BCP, mostly because upper CBP thin film stabilizes under BCP thin film. The mixed layer of BCP:CBP gives slightly decreased efficiency than BCP and BCP/CBP, mostly because the electron mobility of the OSC using BCP:CBP is decreased than those using BCP and BCP/CBP. However, the BCP:CBP increases thermal stability of device than BCP and BCP/CBP, ascribed to that the BCP and CBP effectively inhibit reciprocal tendencies of crystallizations in the mixed layer. Moreover, the BCP:CBP improves the light stability of device than the BCP and BCP/CBP, because the energy transfer from BCP to CBP in in the mixed layer effectively decelerates the photodegradation of BCP. We provide a facial method to improve the stabilities of cathode buffer layers against heat and light, beneficial to the commercial development of OSCs.

scholarly journals Investigation of reactively sputtered TaN thin-film resistors for microwave photonic applications

2021 ◽  
pp. 93-98
Author(s):  
Evgenii Erofeev ◽  
Egor Polyntsev ◽  
Sergei Ishutkin
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Magnetron Sputtering ◽  
Electrical Resistance ◽  
High Thermal Stability ◽  
Tantalum Nitride ◽  
Reactive Magnetron ◽  
Microwave Photonic ◽  
Thin Film Resistors ◽  
Thermal Stability Of

Electrophysical characteristics and their thermal stability of thin-film resistors based on tantalum nitride (TaN) obtained by reactive magnetron sputtering were investigated. The optimal modes of the magnetron sputtering process are determined, ensuring the Ta2N phase film composition with the value of the specific electrical resistance of 250 μm cm and high thermal stability of the parameters. On the basis of the investigations carried out, thin-film matching resistors were manufactured for use as part of an electro-optical InP-based MZ modulator

Molecular orientation and thermal stability of thin-film organic semiconductors

2021 ◽  
Vol 88 ◽  
pp. 106014
Author(s):  
Han-Nan Yang ◽  
Shou-Jie He ◽  
Tao Zhang ◽  
Jia-Xiu Man ◽  
Yongbiao Zhao ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Organic Semiconductors ◽  
Molecular Orientation ◽  
Thermal Stability Of
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