Temperature and irradiance effect on the photovoltaic parameters of a fullerene/conjugated-polymer solar cell

Eugene A. Katz; David Faiman; Yafit Cohen; Franz Padinger; Christoph J. Brabec; Niyazi Serdar Sariciftci

doi:10.1117/12.416940

5 February 2001 Temperature and irradiance effect on the photovoltaic parameters of a fullerene/conjugated-polymer solar cell

Eugene A. Katz, David Faiman, Yafit Cohen, Franz Padinger, Christoph J. Brabec, Niyazi Serdar Sariciftci

Author Affiliations +

Proceedings Volume 4108, Organic Photovoltaics; (2001) https://doi.org/10.1117/12.416940
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Bulk donor-acceptor heterojunctions between conjugated polymers and fullerene derivatives have been utilized successfully for photovoltaic devices showing monochromatic efficiencies above 1%. The present paper reports the temperature and irradiance dependencies of full-spectrum photovoltaic parameters for such devices. The measurements were performed under real sun conditions and under a solar simulator. The sun provided a light source stable in intensity to within +/- 1% and closely approximating a true AM1.5 spectrum, whereas the simulator enabled the light intensity to be varied in the range 80 - 600 W m^-2. The most interesting feature that was observed for these devices is that above a cell temperature of 20 degree(s)C the positive temperature coefficient observed for the short- circuit current exceeds in magnitude the negative temperature coefficient that was found for the open-circuit voltage. This means that, unlike the situation for conventional PV devices, these cells actually exhibit an increase in efficient with increasing temperature (reaching a value of 0.63% at 40 degree(s)C). We suggest that the observed behavior originates from the temperature dependence of the conductivity of the conjugated polymers-fullerene composite. This hypothesis is confirmed by the irradiance-resolved measurements performed at different cell temperatures. We observed a linear increase in the short-circuit current with light intensity over the whole ranges of irradiances and temperatures but maximum temperature influence is observed at highest light intensity.

Citation Download Citation

Eugene A. Katz, David Faiman, Yafit Cohen, Franz Padinger, Christoph J. Brabec, and Niyazi Serdar Sariciftci "Temperature and irradiance effect on the photovoltaic parameters of a fullerene/conjugated-polymer solar cell", Proc. SPIE 4108, Organic Photovoltaics, (5 February 2001); https://doi.org/10.1117/12.416940

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available