GEBEYEHU, D. Highly Efficient p-i-n Type Organic Light-emitting Diodes Using Doping of the Transport and Emission Layers. Ethiopian Journal of Science and Technology, [S. l.], v. 7, n. 1, p. 37–48, 2025. Disponível em: https://journals.bdu.edu.et/index.php/EJST/article/view/2009. Acesso em: 4 feb. 2026.