CdSb pyroelectric material

Product Name

^{Name:a>CdSb pyroelectric material}

Product Overview

^{Thermoelectric materials are functional materials that can convert thermal and electrical energy by utilizing their internal charge carriers and phonons. The effective operation of thermoelectric materials is mainly based on three physical effects, namely the Seebeck Effect (discovered in 1794, referring to the phenomenon of thermal to electrical conversion between two different conductors), the Peltier Effect (discovered in 1834, the phenomenon of electrical to thermal conversion between two different conductors), and the Thomson Effect (discovered in 1851, the phenomenon of heat absorption and release in a single conductor).}

^{The conversion efficiency of thermoelectric materials is determined by the dimensionless parameter - thermoelectric figure of merit ZT, and its calculation formula is:}

^{ZT=σ S2T/k, where σ is the conductivity, S is the Seeback coefficient, which is the inherent electronic transport performance parameter of thermoelectric materials, T is the temperature, and k is the total thermal conductivity. A common method to improve the performance of thermoelectric materials is to introduce multi-scale second phases to regulate the microstructure of thermoelectric materials, thereby changing the band structure and crystal structure of the matrix to coordinate various parameters and optimize their thermoelectric transmission performance.}

^{Traditional inorganic thermoelectric materials are currently a type of thermoelectric material with a wide range of applications and a long research time. Mainly including Mg based thermoelectric materials (Mg2X (X=Si, Sn)), Bi2Te3 based thermoelectric materials, SiGe based thermoelectric materials, PbX (X=S, Se, Te) based thermoelectric materials, SnX (X=S, Se) based thermoelectric materials, GeTe based thermoelectric materials, and oxide based thermoelectric materials.}

^{The II-V antimony compound family, represented by Zn4Sb3 and ZnSb, has great potential in thermoelectric applications due to its inherent low lattice thermal conductivity. CdSb, as an important homogeneous compound of ZnSb, has the same crystal structure and very similar band structure. The experimental work on CdSb mainly focuses on the electronic and optical properties of single crystals. Intrinsic CdSb exhibits a P-type semiconductor with a carrier concentration significantly lower than that required for high thermoelectric performance. In order to achieve a sufficiently high carrier concentration, doping agents such as Ag can be added to increase the hole concentration and improve the thermoelectric performance.}

^{Technical Parameter}

Appearance:Grey black powder

Granularity:20-30μm

Main ingredient:Cd0.99Ag0.01Sb

Semiconductor type:P

^{Product Features}

^{1. Relatively low thermal conductivity: can reduce heat transfer and help improve thermoelectric conversion efficiency.}

^{2. Excellent performance in low-temperature regions: Especially in the lower temperature range, its thermoelectric performance is more prominent.}

^{Application Fields}

^{1. Low temperature refrigeration: It can be used to manufacture small low-temperature refrigeration equipment, such as providing a local low-temperature environment for some temperature sensitive electronic components or sensors.}

^{2. Micro energy harvesting: Plays a role in micro energy harvesting systems, obtaining electrical energy from small temperature differences in the environment to power micro devices, such as micro sensor networks.}

^{Related Information}

^{Please e-mail for the detailed characterization data.}

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