نتایج جستجو برای: bi2te3
تعداد نتایج: 684 فیلتر نتایج به سال:
In this work, 4-layered SiO2/Bi2Te3/SiO2/Cu film structures were designed and fabricated and the optical properties investigated in the wavelength region of 250-1200 nm for their promising applications for direct solar-thermal-electric conversion. A typical 4-layered film sample with the structure SiO2 (66.6 nm)/Bi2Te3 (7.0 nm)/SiO2 (67.0 nm)/Cu (>100.0 nm) was deposited on a Si or K9-glass sub...
Combining topological insulators (TIs) and magnetic materials in heterostructures is crucial for advancing spin-based electronics. Magnetic (MIs) can be deposited on TIs using the spin-spray process, which a unique non-vacuum, low-temperature growth process. have highly reactive surfaces that oxidize upon exposure to atmosphere, making it challenging grow ferrites TIs. In this work, demonstrate...
Initiated by the theoretical works of Hicks and Dresselhaus [1], the interest in nanostructured materials as more efficient thermoelectric materials has increased enormously. Recent experimental results on structures ranging from superlattices [2] to Si nanowires [3,4] emphasize the potential of tailoring materials properties by implementing finiteand quantum-size effects to circumvent classica...
مواد ترموالکتریک دارای پتانسیل بالایی جهت استفاده در مولد برق، پمپاژ گرما و یخچال¬ها می¬باشند. این مواد می¬توانند انرژی گرمایی اتلافی را بدون هیج قسمت متحرکی تبدیل به الکتریسیته نمایند. بهره¬وری مواد ترموالکتریک توسط کمیت بدون بعد ضریب ارزشیzt تعیین می¬گردد. بیسموت تلوراید و آنتیموان تلوراید (bi2te3 و sb2te3) و آلیاژهایی از آن¬ها از بهترین مواد ترموالکتریک ¬اند. در این تحقیق به بررسی ساختار، ...
To improve the thermoelectric performance and wearability of fabric based materials, a superhydrophobic encapsulated Bi2Te3/CNT was introduced. Through layer-by-layer assembly process, Bi2Te3 CNT were coated onto substrate, respectively. A double layer encapsulation composed silicone, PDMS PMMA surface to isolate it from ambient environment. The with water contact angle 158.6° exhibits great se...
Thermoelectric materials have attracted much attention due to the current interest in energy conversion and recent advancements in nano-engineering. A simple approach to synthesize BiTe and Bi2Te3 micro/nanowires was developed by combining solution chemistry reactions and catalyst-free vapor-solid growth. A pathway to transform the as-grown BiTe nanostructures into Bi2Te3 can be identified thro...
In an effort to develop a Standard Reference Material (SRM™) for Seebeck coefficient, we have conducted a round-robin measurement survey of two candidate materials-undoped Bi2Te3 and Constantan (55 % Cu and 45 % Ni alloy). Measurements were performed in two rounds by twelve laboratories involved in active thermoelectric research using a number of different commercial and custom-built measuremen...
Interfaces, such as grain boundaries in a solid material, are excellent regions to explore novel properties that emerge as the result of local symmetry-breaking. For instance, at the interface of a layered-chalcogenide material, the potential reconfiguration of the atoms at the boundaries can lead to a significant modification of the electronic properties because of their complex atomic bonding...
We show that certain three-dimensional (3D) superlattice nanostructure based on Bi2Te3 topological insulator thin films has better thermoelectric performance than two-dimensional (2D) thin films. The 3D superlattice shows a predicted peak value of ZT of approximately 6 for gapped surface states at room temperature and retains a high figure of merit ZT of approximately 2.5 for gapless surface st...
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