Peculiarities of Eu3+ Photoluminescence in Opal Photonic Crystal Films and Heterostructures Based of Them. Ukr. J. Phys. [Internet]. 2024 Jan. 6 [cited 2026 Sep. 11];68(12):785. Available from: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023173