3. (a) Among thin-film and emerging photovoltaic technologies,explain two photovoltaic cells you understand well, in terms ofworking principle, structure, materials used, fabricationtechniques, advantages, and disadvantages.
(b) Assume you are about to start a business in photovoltaictechnologies. Based on what you have studied in this course; whattype of photovoltaic cell business would you like to run? Explainthe reasons.
