Patent ID: 8138416

Claim:
A solar cell comprising: a substrate; a first micro-heater having a first heating portion and first supports, the first heating portion extending in a first direction and spaced apart from the substrate by the first supports; a second micro-heater having a second heating portion and second supports, the second heating portion extending in a second direction so as to traverse the first heating portion while being spaced apart from the substrate by the second supports; and a plurality of In x Ga 1-x N p-n junction layers at a juncture of the first and second heating portions, x being a number from 0 to 1 and each of the plurality of In x Ga 1-x N p-n junction layers having a different value for x, the plurality of In x Ga 1-x N p-n junction layers being electrically-connected to the first and second heating portions and wherein the first and second supports are directly disposed on the substrate.