摘要
通过应用 Scharfetter- Gum mel解法数值求解 Poisson方程 ,对热平衡态 a- Si C/ c- Si异质结太阳能电池进行计算机数值模拟 ,详细分析不同制备条件下 a- Si C/ c- Si异质结太阳能电池的能带结构和电池中电场强度分布 ,指出采用更薄 p+ ( a- Si C∶ H)薄膜和在 pn异质结嵌入 i( a- Si∶ H)缓冲薄层设计能有效增强光生载流子的传输与收集 ,从而提高 a- Si C/ c- Si异质结太阳能电池的性能 ,而高强度光照射下模拟计算表明 ,a- Si C/ c-
A computer simulation model of _SiC/c-Si heter oj unction solar cells at thermodynamic equilibrium using a Scharfetter-Gummel sol ution of Poissons equation is developed.The energy band structure and distributi on of electric field in _SiC/c-Si heterojunction are analyzed in detail.From results,the collection and transport of photo-generated carriers are increased effectively due to the designs of thinner p +(_SiC∶H) layer and the insertio n of an i(_Si∶H) buffer thin layer into the heterojunction.Such a design also improves the performances of _SiC/c-Si heterojunction solar cells.In case of prolonged light soaking,the simulation shows that _SiC/c-Si heterojunction s tructure solar cell possesses high light stability.
基金
国家自然科学基金资助项目 (批准号 :698760 2 4)~~
