Surface Photovoltage Spectroscopy Observes Sub-Band-Gap Defects in Hydrothermally Synthesized SrTiO3 Nanocrystals

2019 ◽  
Vol 123 (41) ◽  
pp. 25081-25090 ◽  
Author(s):  
Xiaoqing Ma ◽  
Zongkai Wu ◽  
Emily J. Roberts ◽  
Ruirui Han ◽  
Guodong Rao ◽  
...  
Keyword(s):  
Band Gap ◽  
Surface Photovoltage ◽  
Surface Photovoltage Spectroscopy

Band gap shift in Al1−xInxN/AlN/GaN heterostructures studied by surface photovoltage spectroscopy

2011 ◽  
Vol 98 (14) ◽  
pp. 142111 ◽  
Author(s):  
Daniela Cavalcoli ◽  
Saurabh Pandey ◽  
Beatrice Fraboni ◽  
Anna Cavallini
Keyword(s):  
Band Gap ◽  
Surface Photovoltage ◽  
Surface Photovoltage Spectroscopy

Band gap determination of semiconductor powders via surface photovoltage spectroscopy

1999 ◽  
Vol 86 (10) ◽  
pp. 5573-5577 ◽  
Author(s):  
D. Gal ◽  
Y. Mastai ◽  
G. Hodes ◽  
L. Kronik
Keyword(s):  
Band Gap ◽  
Surface Photovoltage ◽  
Surface Photovoltage Spectroscopy

scholarly journals Surface Photovoltage Spectroscopy and AFM Analysis of CIGSe Thin Film Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Nima E. Gorji ◽  
Ugo Reggiani ◽  
Leonardo Sandrolini
Keyword(s):  
Thin Film ◽  
Band Gap ◽  
Surface Photovoltage ◽  
Force Microscopy ◽  
Surface Photovoltage Spectroscopy ◽  
Grain Sizes ◽  
Atomic Force ◽  
Afm Analysis ◽  
Deep Donor ◽  
Donor States

The band gap, grain size, and topography of a Cu(In,Ga)Se2(CIGSe) thin film solar cell are analyzed using surface photovoltage spectroscopy (SPV) and atomic force microscopy (AFM) techniques. From the steep increase in SPV signal the band gap of the CIGSe absorber, In2S3and ZnO layers are extracted and found to be 1.1, 1.3 and 2.6 eV, respectively. Already below the band gap of ZnO layer, a slight SPV response at 1.40 eV photon energies is observed indicating the presence of deep donor states. The root mean square (rms) of the surface roughness is found to be 37.8 nm from AFM surface topography maps. The grain sizes are almost uniform and smaller than 1 μm.

Investigation of P3HT/n-Si heterojunction using surface photovoltage spectroscopy

Vacuum ◽  
2012 ◽  
Vol 86 (12) ◽  
pp. 2158-2161 ◽  
Author(s):  
Yongchang Sang ◽  
Aimin Liu ◽  
Weifeng Liu ◽  
Dawei Kang
Keyword(s):  
Surface Photovoltage ◽  
Surface Photovoltage Spectroscopy
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