Mazzarella Luana, Werth Matteo, Jäger Klaus, Jošt Marko, Korte Lars, Albrecht Steve, Schlatmann Rutger, Stannowski Bernd
Opt Express. 2018 May 14;26(10):A487-A497. doi: 10.1364/OE.26.00A487.
We performed optical simulations using hydrogenated nanocrystalline silicon oxide (nc-SiO:H) as n-doped interlayer in monolithic perovskite/c-Si heterojunction tandem solar cells. Depending on the adjustable value of its refractive index (2.0 - 2.7) and thickness, nc-SiO:H allows to optically manage the infrared light absorption in the c-Si bottom cell minimizing reflection losses. We give guidelines for nc-SiO:H optimization in tandem devices in combination with a systematic investigation of the effect of the surface morphology (flat or textured) on the photocurrent density. For full-flat and rear textured devices, we found matched photocurrents higher than 19 and 20 mA/cm, respectively, using a 90 nm nc-SiO:H interlayer with a refractive index of 2.7.
我们使用氢化纳米晶硅氧化物（nc-SiO:H）作为单片钙钛矿/c-Si异质结串联太阳能电池中的n型掺杂中间层进行了光学模拟。根据其折射率（2.0 - 2.7）和厚度的可调值，nc-SiO:H能够对c-Si底部电池中的红外光吸收进行光学管理，从而将反射损失降至最低。我们给出了串联器件中nc-SiO:H优化的指导方针，并结合对表面形态（平整或纹理化）对光电流密度影响的系统研究。对于全平整和背面纹理化的器件，我们发现使用折射率为2.7的90 nm nc-SiO:H中间层时，匹配光电流分别高于19和20 mA/cm²。
