کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1790775 | 1524451 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photocapacitance study of MBE grown GaInNAsSb thin film solar cells Photocapacitance study of MBE grown GaInNAsSb thin film solar cells](/preview/png/1790775.png)
GaInNAsSb based solar cell structure has been grown using atomic hydrogen assisted molecular beam epitaxy (H-MBE). Transient photocapacitance (TPC) spectroscopy was applied to investigate the optically active defects in the Si-doped GaInNAsSb layer (n-GaInNAsSb) of the structure. In addition to the interband transitions, a sub-band-gap optical transition was also determined using TPC spectroscopy. This sub-band-gap transition corresponds to an electron trap (OE1) at 0.78 eV below the conduction band (EC) edge of n-GaInNAsSb material. Thermally active defects were probed by the electrical measurement using admittance spectroscopy. Thus, a defect profile in the entire band gap of the n-GaInNAsSb film was obtained.
► GaInNAsSb based solar cell structure was grown using molecular beam epitaxy.
► Optically active defects were studied by transient photocapacitance spectroscopy.
► Deep optical level, OE1 was found at 0.78 eV below conduction band of GaInNAsSb.
► Thermally active defects, E1 and E2 were found by admittance spectroscopy.
► A complete defect profile in the Si-doped GaInNAsSb thin film has been obtained.
Journal: Journal of Crystal Growth - Volume 378, 1 September 2013, Pages 57–60