Effective antireflection properties of porous silicon nanowires for photovoltaic applications
Type
Conference PaperAuthors
Najar, Adel
Al-Jabr, Ahmad

Alsunaidi, Mohammad
Anjum, Dalaver H.

Ng, Tien Khee

Ooi, Boon S.

Ben Slimane, Ahmed

Sougrat, Rachid

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Photonics Laboratory
Physical Science and Engineering (PSE) Division
Date
2013-07-11Online Publication Date
2013-07-11Print Publication Date
2013-04Permanent link to this record
http://hdl.handle.net/10754/310648
Metadata
Show full item recordAbstract
Porous silicon nanowires (PSiNWs) have been prepared by metal-assisted chemical etching method on the n-Si substrate. The presence of nano-pores with pore size ranging between 10-50nm in SiNWs was confirmed by electron tomography (ET) in the transmission electron microscope (TEM). The PSiNWs give strong photoluminescence peak at red wavelength. Ultra-low reflectance of <5% span over wavelength 250 nm to 1050 nm has been measured. The finite-difference time-domain (FDTD) method has been employed to model the optical reflectance for both Si wafer and PSiNWs. Our calculation results are in agreement with the measured reflectance from nanowires length of 6 µm and 60% porosity. The low reflectance is attributed to the effective graded index of PSiNWs and enhancement of multiple optical scattering from the pores and nanowires. PSiNW structures with low surface reflectance can potentially serve as an antireflection layer for Si-based photovoltaic devices.Citation
Najar A, Al-Jabr AA, Slimane AB, Alsunaidi MA, Ng TK, et al. (2013) Effective antireflection properties of porous silicon nanowires for photovoltaic applications. 2013 Saudi International Electronics, Communications and Photonics Conference. doi:10.1109/SIECPC.2013.6550769.Conference/Event name
2013 Saudi International Electronics, Communications and Photonics Conference, SIECPC 2013ae974a485f413a2113503eed53cd6c53
10.1109/SIECPC.2013.6550769