European Inventor Award 2013 - Jörg Horzel, Johan Nijs, Jozef Szlufcik - Simplification of the production process of photovoltaic cells (nominee in the category "Research")

Type: STOCKSHOT   Référence: I077954   Durée: 00:03:45   Première transmission: 24/05/2013  Lieu: see shotlist
Fin de production: 22/05/2013
Jörg Horzel and his team developed a process that streamlined the production of silicon-based solar cells, which were long too expensive for commercially viable production. In order for solar cells to conduct electricity, their silicon base must be coated with phosphorous on one side, which involved applying a phosphorous paste to the entire front side of the cell. This caused some of the paste to end up on the rear side, and removing it was an expensive and time-consuming process. Horzel found a way to apply the paste to only certain sections of the cell surface, eliminating the step of removing it from the rear side. The result was a more efficient and cost-effective path to solar energy.

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00:00:00 The sun: without it, life would not be possible. It makes us feel good, warms us up and provides an infinite amount of energy. 00:00:10
00:00:10 Long considered too expensive and inefficient, solar power is now an integral part of our energy supply. For making photovoltaic affordable to everyone as well as for some of the most important research into this technology, we can thank this man, Dr. Jörg Horzel. 00:00:16
00:00:26 IV Jörg Horzel in German: „Für mich war sehr früh schon klar, dass erneuerbare Energien einen wesentlichen Beitrag dazu liefern können, dass Klimaschutz aktiv umgesetzt wird. Und insbesondere die Photovoltaik da ein erhebliches Potenzial hat, weil die Sonne ein Vielfaches dessen bereitstellt, was an Energie benötigt wird.“ Translation in English: “Quite early it was clear to me that renewable energy could play a critical role in actively protecting against climate change. Photovoltaic in particular has considerable potential because the sun provides many times more energy than is required.” 00:00:19
00:00:45 But what is the best way to harness the natural power of the sun? To find out, in 1994 this German physicist began his search for partners who shared his vision. He found them in Belgium. The Interuniversity Microelectronics Centre, IMEC, one of the largest research institutes in the world. 00:00:22
00:01:07 At that time, industrial solar cell production was still in its infancy, but the former photovoltaic group leader, Johan Nijs, had big plans. For his research project, he was able to win some of the best solar experts in Europe: Mia Honore, Jozef Szlufcik and Jörg Horzel Nijs (pronounced Nues) Szlufcik (pronounced Zluftschick) Honore (pronounced Onore) 00:00:14
00:01:21 IV Johan Nijs in English: „In those days of course solar cells were still too expensive. There was no market for it. But we worked very hard, we developed ideas, bright ideas in order to increase the efficiency of solar cells and therefore to lower the cost.” 00:00:15
00:01:36 To manufacture solar cells, phosphorus is melted into a silicon layer, which experts refer to as “doping”.This process creates the conditions for the conversion of sunlight into energy. 00:00:16
00:01:52 Jörg Horzel has sped up and perfected this very time-consuming process that once had to be carried out in several steps. This is made possible by solar cell with selectively distributed regions. 00:00:17
00:02:09 IV Jörg Horzel in German: „Der Phosphor-Diffusion-Schritt ist der Schlüssel-Prozeß-Schritt bei der Herstellung industrieller Solarzellen. Der von uns erfundene selektive Emitterprozeß formt in einem Prozeßschritt schwach dotierte Bereiche und stark dotierte Bereiche nebeneinander in der Solarzelle. Dadurch, dass das in einem Prozeßschritt erfolgt, können die Prozeßkosten gesenkt werden und der Wirkungsgrad gesteigert werden.“ Translation in English: “The phosphorus-diffusion stage is the key process step in the manufacture of industrial solar cells. We have invented a selective emitter process, which in a single process step forms lightly "doped" areas and heavily "doped" regions next to each other in the solar cell. Since the process can be performed in one step, the process costs can be reduced and the efficiency can be increased.” 00:00:18
00:02:27 A breakthrough in the production of industrial solar cells. 20 years later, a large proportion of the world's solar cells are produced according to the example of this method. 00:00:11
00:02:38 For their pioneering work on renewables, Jörg Horzel and his co-inventors have been nominated for the European Inventor Award 2013 in the category “Research”. For the visionary in the field of solar energy this is however no time to bask in the light of his nomination. 00:00:16
00:02:54 IV Jörg Horzel in German: „Wir haben in den letzten zwei Jahrzehnten ein Wachstum über Faktor 1000 gesehen und wenn wir den größten Teil der Energieversorgung decken wollen mit Solarenergie, muss ein weiteres Wachstum wieder über zwei, drei Größenordnungen stattfinden.“ Translation in English: “In the last two decades, we have seen a growth of more than 1000 times. If we truly aspire to have a large proportion of total energy production from solar power, we will need two or three more magnitudes of growth.” 00:00:24
00:03:18 The solar panels in his hometown of Karlsruhe has exactly the right shape, it resembles the European Inventor Award, which will be given out in Amsterdam on May 28. 00:00:08
00:03:26 Whether he wins or not doesn't matter, the triumphant success of photovoltaic is unstoppable. Jörg Horzel has made an important contribution to making solar power accessible to everyone. 00:00:19
00:03:45 End 00:00:00
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