인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Persistent phosphors with high charge storage capacity are promising for a wide range of applications, mostly demonstrated at room temperature. Designing such long‐persistent phosphor (LPP) applicable at higher temperature is largely unexplored and challenging. To prevent spontaneous charge release and ensure long‐term data retention, high‐temperature LPPs must feature multilevel traps with sufficient activation energies. In this report, LaAlO 3 :Eu 3+ (LAO:E) phosphor is investigated with multiple traps and four integrated luminescent emissions: down‐conversion photoluminescence and radioluminescence, thermally stimulated luminescence, persistent luminescence (PersL), and optically stimulated luminescence (OSL). Unlike earlier optical storage phosphors, our LAO:E phosphor possesses charge carriers that are released from these traps, ranging from shallow trap 1 to deep trap 4, across various temperatures. The potential for the long‐term storage of charge carriers at both room and elevated temperatures is also examined. Supported by experimental data and density functional theory calculations, we establish a correlation between the various traps and the desired PersL and OSL properties of the LAO:E phosphor. Additionally, a comprehensive trapping–detrapping mechanism for charge carriers is developed. The studies here are expected to pave the way for designing advanced multimode phosphors for a wide range of applications at high temperatures.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.