Read the FRAUNHOFER INSTITUTE- PV report 2021 report and answer briefly the following questions (i) What is the share of multicrystalline cells in the market? (ii) What is the max. efficiency recorded in lab for: (a) monocrystalline Si, (b) polycrystalline Si and (c) CIGS cells (iii) explain what energy payback time is (you may need to read the relevant chapter from your book or search in the internet)