Current matching and efficiency optimization in a two-junction nanowire-on-silicon solar cell

被引：33
|
作者：
Hu, Y. [1 ]
Li, M. [1 ]
He, J-J [1 ]
LaPierre, R. R. [2 ]
机构：
[1] Zhejiang Univ, Ctr Integrated Optoelect, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China
[2] McMaster Univ, Dept Engn Phys, Hamilton, ON L8S 4L7, Canada
来源：
NANOTECHNOLOGY | 2013年 / 24卷 / 06期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1088/0957-4484/24/6/065402
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Numerical simulation of the photocurrent density is performed for a two-junction nanowire (NW)-on-silicon solar cell under AM1.5G illumination. The photocurrent density is determined for NW diameters from 100-250 nm, period (spacing) from 250-1000 nm, and length of 5 mu m. The dependence of photocurrent density on NW bandgap is also determined. For each NW bandgap, the optimum diameter and period are determined to obtain current matching between the top NW cell and the bottom Si cell.
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页数：5
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