Increased yield of PERC compared to Al-BSF cells due to inherently lower module operating temperatures

authored by

Malte R. Vogt, Henning Schulte-Huxel, Matthias Offer, Susanne Blankemeyer, Robert Witteck, Marc Kontges, Karsten Bothe, Rolf Brendel

Abstract

We fabricate test modules with p-type Passivated Emitter und Rear Cells (PERC) and modules with cells that have a full-area aluminum rear side metallization (Al-BSF) to show advantages of an inherently lower operating temperature of cells with a PERC structure. We find a 4°C lower operating temperature for the PERC module under 1.4 suns if no temperature control is applied, an effect that is hidden under standard testing conditions but is advantageous under real operation conditions. We perform a 3D ray tracing analysis in the spectral range from 300-2500 nm for determining all heat sources in the module and combine this with a 1D finite element method model solving the coupled system of semiconductor, thermal conduction, convection and radiation equations for module temperature and power output. The simulations reveal that the root of the reduced temperature of the PERC modules is a higher reflectivity of the cells' rear side mirror.

Organisation(s)

Institute of Solid State Physics

External Organisation(s)

Institute for Solar Energy Research (ISFH)
Friedrich Lütze GmbH

Type

Conference contribution

Pages

1-3

No. of pages

3

Publication date

2017

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/PVSC.2017.8366278 (Access: Closed)