Chalcopyrite

Chalcopyrite

Chalcopyrite has a tetragonal crystal structure (space group I42d ) and the composition CuFeS2; answer to Guess the Mineral

Low-Cost, Nontoxic White LEDs

Low-Cost, Nontoxic White LEDs

Intercrossed carbon nanorings used as low-cost and environmentally friendly phosphors for white-light-emitting diodes