太陽能電池的工作原理 Semiconductor-Energy band 射防止膜 Refed-Proof Film 型半哪 N-Type Semiconduct :。sm Energy aap Sp甲 D半海曾 p-Type Semiconductor I we far apart atoms Iwe close atoms 太光鼋粒子 A K Cha, Nated Sun Ya-sen Univers Semiconductor -Fermi level Semiconductor -Drift and diffusion At thermal equilibriu, Fermi function describes hss action lay the probability that a state at energy E Is nilled by Diffusion where Ey b a refereace energy called HDPe LE,E, Energy lasses due to eel states at energy E whih are less than Er are mostly nlle: States at energy E which are larger than Er are mostly unoccupied. EE+ d 0 d Carier concentrations in conduction band and E valence bands are E,MMm“t4rd= where 一gErn=v D,=-4: Diffusa eeeficirat J=∑-=-=啊只E N-2 25m yx Efecthe dreary f tate of rance ad 口J= A k Chu Natal Sun Ya sen Unverse A.K. Cha, Natonal Sun Ya-sen Universty21 太陽能電池的工作原理 22 Semiconductor-Energy band A. K. Chu, National Sun Yat-sen University 23 Semiconductor-Fermi level A. K. Chu, National Sun Yat-sen University 24 Semiconductor-Drift and diffusion A. K. Chu, National Sun Yat-sen University