不ふ純じゅん物ぶつ準じゅん位い

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じゅ

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ぶ

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じゅ

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Meanings

1

noun

impurity level

Technical term in semiconductor physics referring to an energy level introduced by impurities in a crystal.

不negative, non-, bad

純genuine, purity, innocence

物thing, object, matter

準semi-, correspond to, proportionate to

位rank, grade, throne

不ふ純じゅん物ぶつ
不純物 means 'impurity' in general, while 不純物準位 specifically refers to the energy level associated with that impurity in a solid.
準じゅん位い
準位 is a physics term for 'level' (energy level). 不純物準位 combines it with 不純物 to specify an impurity-related energy level.

Compound of 不純物 (impurity) + 準位 (energy level). A technical term formed from standard Sino-Japanese components.