Designing photovoltaic cells for indoor energy harvesting systems

Author

Ruhle, Karola ; Freunek, M. ; Reindl, Leonhard M. ; Kasemann, M.

Author_Institution

Dept. of Microsyst. Eng., Univ. of Freiburg, Freiburg, Germany

fYear

2012

fDate

20-23 March 2012

Firstpage

1

Lastpage

5

Abstract

Recent research focuses on developing photovoltaic cells that are optimized for indoor conditions and therefore suitable for photovoltaic energy harvesting in micro systems. The available conditions for indoor photovoltaic cells are investigated and discussed concerning intensity and spectra. The influence of the parallel and series resistances on the efficiency of crystalline and amorphous Silicon devices with decreasing intensity are discussed and compared to simulations with the two diode model. For low intensities as present indoors (<; 1 mW cm^-2) the parallel resistance restricts the achievable efficiency and needs therefore to be optimized.

Keywords

elemental semiconductors; energy harvesting; silicon; solar cells; Si; amorphous silicon devices; crystalline silicon devices; diode model; indoor energy harvesting systems; indoor photovoltaic cells; microsystems; parallel resistance; photovoltaic cell design; photovoltaic energy harvesting; series resistance; indoor; photovoltaic cell; photovoltaic energy harvesting;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Signals and Devices (SSD), 2012 9th International Multi-Conference on

Conference_Location

Chemnitz

Print_ISBN

978-1-4673-1590-6

Electronic_ISBN

978-1-4673-1589-0

Type

conf

DOI

10.1109/SSD.2012.6197998

Filename

6197998