Title :
Approach to the carbon-based superlattice structure solar cell
Author :
Kojima, Nobuaki ; Goetzberger, Oliver ; Ohshita, Yoshio ; Yamaguchi, Masafumi
Author_Institution :
Toyota Technol. Inst., Nagoya, Japan
Abstract :
The nitrogen doping effects in C60 films by RF plasma source have been investigated, and it is found that the nitrogen ion bombardment breaks up C60 molecules and changes them into amorphous carbon. Based on these results, formation of C60/amorphous carbon superlattice structure has been proposed. Quantum size effects of C60 may enhance light absorption, and conductivity control is enabled by impurity doping in the amorphous carbon layers. The periodic structure of the resulting films has been confirmed by XRD measurements, as the preliminary results of fabrication of the superlattice structure
Keywords :
X-ray diffraction; amorphous semiconductors; carbon; fullerene devices; ion beam applications; nitrogen; plasma CVD; plasma CVD coatings; semiconductor doping; semiconductor superlattices; solar cells; vacuum deposited coatings; vacuum deposition; C60 films; C60/amorphous carbon superlattice structure; RF plasma source; XRD measurements; amorphous carbon; amorphous carbon layers; carbon-based superlattice structure solar cell; conductivity control; impurity doping; light absorption enhancement; nitrogen doping effects; nitrogen ion bombardment; periodic structure; quantum size effects; Absorption; Amorphous materials; Conductivity; Doping; Nitrogen; Periodic structures; Photovoltaic cells; Plasma sources; Radio frequency; Superlattices;
Conference_Titel :
Photovoltaic Specialists Conference, 2000. Conference Record of the Twenty-Eighth IEEE
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-5772-8
DOI :
10.1109/PVSC.2000.916022
