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yangnianleaf新蟲 (初入文壇)
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[求助]
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| band gap 和 optical band gap 是一個意思嗎? |
專家顧問 (著名寫手)
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專家經(jīng)驗(yàn): +20 |
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????? fundamental bandgap (??B?????I???????????^?? bandgap or energy gap) ???x??: ???????????????????κ???????A ??????f????? bandgap ????? -> VBM - CBM VBM: valence band maximum CBM: conduction band minimum DFT ????r?? ???????^ Eg = I - A = E(N+1) + E(N-1) - 2E(N) ????? bandgap (Eg) I: ionization potential A: electron affinity optical bandgap (??W?I?????P) ???x??: ?????γ? ??????? (electron-hole pair) ???С???????? ??r?? ??????? ????????B?? (bounded) electronic bandgap (??W?I?????P?????? transport gap) ???x??: ?????γ? ??????? ?K??? ?????? ?K?????????? (unbounded) ?????Y?? http://en.wikipedia.org/wiki/Band_gap |
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