Kowalczewski P, Nakwaski W, Sarzała RP. Photonic crystal used to increase extraction efficiencyof ZnO light-emitting diodes. Photonics Lett. Pol. [Internet]. 2010 Dec. 30 [cited 2024 Apr. 18];2(4):pp. 186-188. Available from: https://photonics.pl/PLP/index.php/letters/article/view/2-64