Caesium Pellets

Caesium Pellets exhibit high reactivity, low ionization potential, and excellent ability to form stable compounds, making them essential in advanced materials science and electronics. Their soft, ductile metallic form enables precise dosing in sealed systems, where they serve as active agents for chemical synthesis, vacuum system getters, and optoelectronic material preparation. Industries such as photovoltaics, electronics manufacturing, and specialty glass production employ caesium pellets for doping perovskite solar cells, enhancing the performance of photoemissive devices, and improving glass refractive indices. Specific technological uses include their role in tuning charge-carrier dynamics in perovskite thin films, serving as electron emitters in ion propulsion systems, and activating photocathodes for high-sensitivity imaging. Research continues to explore their potential in thermoelectric perovskites and next-generation photodetectors, where caesium’s unique atomic properties enable improved efficiency and stability. This combination of chemical reactivity, electronic tunability, and integration potential secures caesium pellets as a critical material in both scientific innovation and specialized industrial applications.

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Tolerance

Properties

Reference & Citations

Flammable

Corrosive

each

Tolerances

Pellet/Lump

Maximum Lump Size		Nominal

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	55
Crystal structure	Body centred cubic
Electronic structure	Xe 6s¹
Valences shown	1
Atomic weight( amu )	133
Thermal neutron absorption cross-section( Barns )	29
Photo-electric work function( eV )	2.14
Atomic radius - Goldschmidt( nm )	0.27
Ionisation potential( No./eV )	1/ 3.89
Ionisation potential( No./eV )	2/ 25.10

Mechanical Properties

Element	Value
Hardness - Mohs	0.2
Material condition	Polycrystalline

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	20@20°C
Temperature coefficient( K⁻¹ )	0.0044@0-100°C

Physical Properties

Element	Value
Boiling point( C )	705
Density( gcm⁻³ )	1.9@20°C

Thermal Properties

Element	Value
Melting point( C )	28.5
Latent heat of evaporation( J g⁻¹ )	611
Latent heat of fusion( J g⁻¹ )	15.78
Specific heat( J K⁻¹ kg⁻¹ )	230@25°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	97@1-26°C