中国物理B ›› 2011, Vol. 20 ›› Issue (9): 97103-097103.doi: 10.1088/1674-1056/20/9/097103
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
曹权, 马志华, 薛春来, 左玉华, 王启明
Cao Quan(曹权), Ma Zhi-Hua(马志华), Xue Chun-Lai(薛春来),Zuo Yu-Hua(左玉华)†, and Wang Qi-Ming(王启明)
摘要: The detailed balance method is used to study the potential of the intermediate band solar cell (IBSC), which can improve the efficiency of the Si-based solar cell with a bandgap between 1.1 eV to 1.7 eV. It shows that a crystalline silicon solar cell with an intermediate band located at 0.36 eV below the conduction band or above the valence band can reach a limiting efficiency of 54% at the maximum light concentration, improving greatly than 40.7% of the Shockley—Queisser limit for the single junction Si solar cell. The simulation also shows that the limiting efficiency of the silicon-based solar cell increases as the bandgap increases from 1.1 eV to 1.7 eV, and the amorphous Si solar cell with a bandgap of 1.7 eV exhibits a radiative limiting efficiency of 62.47%, having a better potential.
中图分类号: (Narrow-band systems; intermediate-valence solids)