HJT solar module efficiency boost with new light redirecting film

The rise in energy of three.8% achieved by photo voltaic modules with silicon heterojunction cells (HJT) mixed with a brand new mild redirecting movie.

Helsinki – March 9, 2023

The patented Photo voltaic Vitality Optics (web optimization) mild redirecting movie was developed by Clever Management Techniques Ltd.

Heterojunction expertise is a novel kind of photo voltaic cell expertise, which achieves increased cell effectivity in comparison with typical PERC photo voltaic cells. By making use of the web optimization movie to the within of the HJT module entrance glass, the sunshine is redirected from the much less environment friendly sides to the extra environment friendly areas of the cells.

“We’re very enthusiastic about these newest outcomes,” stated Dr. Andrea Pfreundt, product supervisor of ICS. “Our workforce has labored tirelessly to adapt our expertise as an answer to the difficulty of lack of effectivity on the edge. These new outcomes present that overlapping the sides of heterojunction photo voltaic cells with web optimization movie has the potential to be a sport changer for top effectivity PV modules.”

The web optimization movie was examined on minimodules on the Fraunhofer Institute for Photo voltaic Vitality Techniques. 4 M6 half-cut HJT photo voltaic cells with 1.7 mm cell and a couple of mm string gaps had been assembled into modules with two totally different web optimization movie configurations, overlapping the cell edges by 0.5 mm and 1 mm respectively ( Determine 1). The photo voltaic cells within the take a look at are used out of the field, with out additional modification or adjustment.

The outcomes present a big enchancment in each most energy and fill issue. An absolute enchancment in module effectivity of 0.66% to 0.75% was achieved, which corresponds to three.3% and three.8% relative enchancment (Desk 1).

Higher efficiency outcomes from a mixture of each results. The primary is an elevated photo voltaic cell effectivity by decreasing the sting recombination loss, proven in Determine 3; the second is the improved use of sunshine from the inactive areas of the module.

Detailed optical simulation fashions of photo voltaic modules and the web optimization movie have been created and verified with experimental information. The outcomes present that the applying of web optimization movie in a 120 or 144-cell module, with 2 mm cell gaps and a white backsheet, can present an effectivity enchancment of two.6% relative enchancment, or two kind of electrical energy. As an enchancment on clear bifacial modules or an alternative choice to the gapless resolution at present utilized by some module producers, the effectivity features can exceed 3.5 %.

“Optimizing the PV module with web optimization movie is a cheap method to enhance the facility and effectivity of the module.”, stated Kari Rinko, CTO of Clever Management Techniques Ltd. “We offer a viable resolution with further Wp prices which are considerably decrease than typical module prices for residential and utility codecs.”

For extra info please contact:

Keimo Kalliosaari

CEO, Clever Management Techniques Ltd

E-mail: keimo.kalliosaari@ics.fi

Tel: +358503343629


About Clever Management Techniques Ltd

ICS Clever Management Techniques Ltd is a Finnish high-tech firm specializing in optical options to maximise the output from photo voltaic panels. The workforce behind the answer is to a big extent the identical that developed the optical expertise behind the Amazon household of front-lit Kindle gadgets.

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