"Nocera's leaf is stable -- operating continuously for at least 45 hours without a drop in activity in preliminary tests -- and made of widely available, inexpe

"Nocera's leaf is stable -- operating continuously for at least 45 hours without a drop in activity in preliminary tests -- and made of widely available, inexpensive materials -- like silicon, electronics and chemical catalysts." So semiconductor grade Silicon is readily available and easily manufactured in a third world country? Or will they have to buy the finished product from first world countries? If they do, where do they get the money? Unless they can build it themselves - and it doesn't sound like they can - how will it help them?