Enhanced Photoluminescence via Integration of Block copolymer-Quantum dots
발표자
()
초록
내용
Achieving high efficiency in quantum dots (QDs) films is essential for the low energy consumption which is the requirement for the next-generation display and lighting. Despite many efforts in developing high quantum yield (QY) in solution state, most QD films in actual devices have suffered from low excitation of QDs, poor light extraction and non-radiative energy transfer between adjacent QDs, deteriorating the photoluminescence (PL) QY. Herein, we suggest a facile strategy through the fabrication of QD-BCP (poly(styrene-b-4-vinylpyridine)) film that offers the solution for all the constraints. Highly interconnected structure of the BCP facilitates the random scattering of light, leading to the enhancement of absorption and extraction, respectively. Additionally, the nanometer-scales phase separation of two blocks with the conjugation effects enables the dispersion of QDs in the matrix, hence reducing the non-radiative energy transfer.