Wikipedia:Babel
deDieser Benutzer spricht Deutsch als Muttersprache.
en-3This user can contribute with an advanced level of the English language.
fr-2Cet utilisateur peut contribuer avec un niveau intermédiaire en français.
es-1Este usuario puede contribuir con un nivel básico de español.
tr-1Bu kullanıcı Türkçeyi düşük düzeyde anlıyor.
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I was working in the field of silicon semiconductor technology for 20 years. Since several years I switched to photovoltaics using now CdTe as active layer. At wikipedia I'm mainly interested in SPC and everything related, including the translation into other languages.