Onderzoekers Stanford ontwerpen sticker-zonnecel

AMSTERDAM – Onderzoekers van de Amerikaanse universiteit Stanford hebben zonnecellen ontwikkeld die als een sticker te plakken zijn op verschillende oppervlakken.

Zonnecellen die je kan plakkenStandaard dunne-film zonnecellen zijn al flexibel, maar hebben nog wel een ondergrond nodig om te functioneren.

De nieuwe cellen hebben dit meer nodig, aldus de onderzoekers in het journaal Scientific Reports.

Dit is een veel grotere ontdekking dan dat het op het eerste gezicht lijkt, verklaren de onderzoekers.

Universele ondergronden

“Universele ondergronden zijn erg moeilijk te combineren met zonnecellen omdat ze normaliter onregelmatige oppervlakken hebben”, zegt mede-onderzoeker Xiaolin Zheng.

“We hebben deze problemen weten te omzeilen met de sticker-cellen. Deze zijn flexibel en hebben een platpotentieel zoals nog nooit gezien is wat de productiekosten en het gewicht verlaagt.”

flexibele zonnecel die op elk oppervlak geplakt kan worden

Beperking flexibele zonnecellen

Normaliter worden dunne-film zonnecellen gefabriceerd op stukken silicium of glas. Hierdoor wordt het gebruik van de flexibele zonnecellen wel enorm beperkt.

De nieuwe zonnecel wordt nog wel gefabriceerd op een silicium ondergrond. In water kan de zonnecel worden afgetrokken van het silicium en op een ander ondergrond worden geplakt.

Het silicium wordt hergebruikt en de zonnecel blijkt een conversieratio te behouden van 7,5 procent.

Lees hier meer over de zonnecel

 

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Foto copyright: Stanford

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