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技術名稱 Technology
發明人 Inventor
江至皓, 李廷佑, 蔡孟霖, 李亞儒, 李翔傑,
所有權人 Asignee 國立臺灣科技大學

專利國家 Country 申請號 Application No. 專利號 Patent No. 中心案號 Serial No.
美國 16/747,504 申請中 1080029US0
中華民國 108144231 申請中 1080029TW0
  點閱數:269

技術摘要:
Halide perovskite quantum dots (PQDs) are promising materials for diverse applications including high phosphors, light-emitting diodes, and color filters due to their intriguing properties such as tunable bandgap, high photoluminescence quantum yield (PLQY) and narrow emission peaks. Despite the prosperous achievements over the past several years, PQDs face severe challenge in terms of stability under different circumstances. Currently, researchers have overcome part of the stability problem, making PQDs sustain in water, oxygen and high-polar environments for long-term use. However, halide PQDs can still be easily degraded under continuous excitation, which significantly limit their potential for conventional applications. In this study, we develop an oleic acid/oleylamine (traditional surface ligands)-free method to fabricate perovskite QD papers (PQDP) by adding cellulose nanocrystals (CNC) as long-chain interactive binding ligands that stabilize the PQD structure. As a result, the PLQY of as-fabricated PQDP remains over ~90% of its initial value under continuous ultraviolet (UV, 16 W) excitation for 2 months, showing almost no photo degradation behavior. This proposed method paves a way for the fabrication of ultra-stable PQDs and related applications.

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