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High efficiency crystalline silicon solar cells based on low cost materials

Objective



Objectives

The project aims at the development of low cost silicon sheet material and the demonstration of high efficiency solar cell structures in this material in pilot industrial production.

Technical Approach

A fast (one wafer per second) and flexible mechanical wafer engineering technique will be developed and its viability demonstrated on a laboratory scale at the University of Konstanz (D) and implemented in an industrial environment at Eurosolare SpA (I). The compatibility of surface engineered wafers with existing solar cell production technology will be demonstrated on both levels.
The project aims at the demonstration of the cost-effectiveness of the wafer engineering method on advanced cast multi-crystalline silicon. IMEC (B) aims at the demonstration of more than 17% cell efficiency on large area (10x10 cm2) single-side V-grooved and screen-printed solar cells and a corresponding 16% total area module efficiency.
Partially transparent solar cells will be developed at the University of Konstanz based on RGS (ribbon growth on substrate) material prepared by Bayer AG (D). This activity aims at a demonstration of 12% module efficiency.
A molten zone silicon sheet process will be developed by the University of Lisbon (P) and the resulting material quality will be evaluated by the different project partners.

Expected Achievements and Exploitation

The outputs of the project represent a significant advance with respect to the state-of-the-art technology. In particular the demonstration of partially transparent, highly efficient solar modules based on a low cost sheet-grown material and a fast texturing method may lead to innovative applications of photovoltaics e.g. in buildings. The project is most likely to reduce the cost of solar systems in an economy-of-scale approach since the involved methods represent highly flexible and cost-effective mass production techniques.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

UNIVERSITAET KONSTANZ
Address
Universitaetsstrasse 10
Konstanz
Germany

Participants (4)

Bayer AG
Germany
Address

47812 Krefeld
EUROSOLARE SPA
Italy
Address
6,Piazzale Enrico Mattei 1
00144 Roma
Fundaçao da Faculdade de Ciencias da Universidade de Lisboa
Portugal
Address
Campo Grande
1700 Lisboa
INTERUNIVERSITAIR MIKRO-ELEKTRONICA CENTRUM VZW
Belgium
Address
75,Kapeldreef 75
3001 Heverlee