Si1 Sn1

semiconductor
· Si1 Sn1

Si₁Sn₁ is an equiatomic silicon-tin compound belonging to the IV-IV semiconductor family, representing a 1:1 stoichiometric alloy of group 14 elements. This material is primarily of research interest for next-generation photovoltaic and optoelectronic applications, where the tunable bandgap between silicon and tin components offers potential for tandem solar cells, direct-bandgap light emission, and high-efficiency energy conversion devices. Si₁Sn₁ is notable as an alternative to conventional Si or Ge homojunctions and tin-based perovskites because it combines the material maturity of silicon with tin's favorable bandgap characteristics, though commercial deployment remains limited pending resolution of stability and crystal quality challenges.

Tandem solar cellsOptoelectronic semiconductorsPhotovoltaic researchDirect bandgap emittersAdvanced semiconductor heterostructuresNext-generation energy conversion

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Band Gap(Eg)
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eV——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
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eV/atom——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.
Si1 Sn1 — Properties & Data | MatWorld