Twin-Perovskite Structured Ba<sub>8</sub>Ti<sub>3</sub>Nb<sub>4</sub>O<sub>24</sub>: Pr<sup>3+</sup>: A Fast Photochromics with Millisecond-Level Response Speed for Optical Storage
Photochromism (PC) involves profound and complex optoelectronic processes and the interplay of color centers and the host matrix. To date, achieving a fast PC response speed remains a challenge. Here, a new fast PC “twin-perovskite” niobate ceramic, Ba8Ti3Nb4O24: Pr3+ (BTN:Pr3+), exhibiting a remarkable PC response time down to 20 ms and a record PC contrast of 42.3% among niobate-based PC materials, is identified. Experimental and theoretical approaches reveal the key role of the oxygen vacancy in the PC reaction. It is proposed that the fast PC response is related to the short time spent redistributing charge carriers due to a single type of color center and the quick transport of charge carriers within the densely packed crystal framework featuring a face-sharing twin-plane structure. Finally, we present demo experiments of real-time write-display of information in a repeatable manner and demonstrate bit-by-bit information optical storage at high write speeds that could be read in dual modes.
Authors
- Yao Cheng (ORCID: https://orcid.org/0000-0003-1179-2886)
- Qingming Huang (ORCID: https://orcid.org/0000-0002-9247-2763)
- Guangbin Dong (ORCID: https://orcid.org/0000-0003-1331-6015)
- Xinxin Han (ORCID: https://orcid.org/0000-0003-4433-0733)
- Hang Lin (ORCID: https://orcid.org/0000-0001-7338-0188)
- Hongyi Yang (ORCID: https://orcid.org/0000-0003-2908-5346)
- Pengfei Wang (ORCID: https://orcid.org/0000-0003-2649-7003)
- Xuefeng Li (ORCID: https://orcid.org/0000-0001-5082-1008)
- Yuansheng Wang (ORCID: https://orcid.org/0000-0002-8117-2642)
- Tao Hu (ORCID: https://orcid.org/0009-0003-4768-8789)
- Ju Xu (ORCID: https://orcid.org/0000-0002-4645-8995)
Institutions
- Guangxi University (CN)
- Chinese Academy of Sciences (CN)
- Xiamen Institute of Rare-earth Materials (CN)
- Institutes of Science and Development (CN)
- Fujian Institute of Research on the Structure of Matter (CN)
- Tan Kah Kee Innovation Laboratory (CN)
- State Key Laboratory of Structural Chemistry
- Fuzhou University (CN)
- Wuyi University (CN)
Publication Details
- Journal
- ACS Energy Letters
- Published
- 2024-12-27
- DOI
- https://doi.org/10.1021/acsenergylett.4c03011
- Citations
- 19
- Primary Topic
- Photonic Crystals and Applications
- Type
- article
- Field-Weighted Citation Impact
- 6.41
Funders
- Science and Technology Projects of Fujian Province
- National Natural Science Foundation of China
- Haixi Institute, Chinese Academy of Sciences
- Natural Science Foundation of Fujian Province
- Science Fund for Distinguished Young Scholars of Fujian Province