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1 year ago in Material Science , Physics By Lily

Is SnS an n-type or p-type semiconductor?

My research focuses on non-toxic, earth-abundant solar materials. SnS is promising due to its ideal band gap, but successful p-n junction design hinges on knowing its native doping. Reports vary, often blaming stoichiometric deviations during synthesis. I need a clear expert perspective to guide my experimental approach and material processing.

 

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By Rohini Singh Answered 1 year ago

Based on my experience with chalcogenide thin-film deposition, I would say SnS is intrinsically a p-type semiconductor. This originates from tin vacancies which act as acceptors. However, I have seen numerous cases where processing conditions like sulfur-rich environments or specific deposition temperatures can induce n-type behavior. I recommend tightly controlling your stoichiometry during growth. For a reliable p-type absorber, aim for slightly tin-deficient conditions and characterize with Hall effect measurements on every batch.

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