Regular Article

A differential spectral responsivity measurement system constructed for determining of the spectral responsivity of a single- and triple-junction photovoltaic cells

¹ TUBITAK UME, Optics Laboratory, Gebze-Kocaeli, Turkey
² TUBITAK SAGE, Advanced Manufacturing Technologies, Mamak-Ankara, Turkey
³ PTB, Solar Cells Laboratory, Bundesallee 100, 38116 Braunschweig, Germany

^* e-mail: ferhat.sametoglu@tubitak.gov.tr

Received: 28 April 2017
Received in final form: 7 July 2017
Accepted: 28 September 2017
Published online: 31 October 2017

Abstract

A differential spectral responsivity (DSR) measurement system has been designed and constructed at National Metrology Institute of Turkey (TUBITAK UME) to determine the spectral responsivity (SR) of a single- or a multi-junction photovoltaic device (solar cell). The DSR setup contains a broad band light bias source composed of a constructed Solar Simulator based on a 1000 W Xe-arc lamp owning a AM-1.5 filter and 250 W quartz-tungsten-halogen lamp, a designed and constructed LED-based Bias Light Sources, a DC voltage bias circuit, and a probe beam optical power tracking and correction circuit controlled with an ADuC847 microcontroller card together with an embedded C based software, designed and constructed in TUBITAK UME under this project. By using the constructed DSR measurement system, the SR calibration of solar cells, the monolitic triple-junction solar cell GaInP/GaInAs/Ge and its corresponding component cells have been performed within the EURAMET Joint Research Project SolCell.