研究生: |
廖昭鑌 Zhao-Bin Liao |
---|---|
論文名稱: |
利用B位摻雜合成高照光穩定性之CsPbI3鈣鈦礦量子點 Synthesis of B-Site Doped CsPbI3 Perovskite Quantum Dots with Excellent Photostability |
指導教授: |
陳志堅
Jyh-Chien Chen 蔡孟霖 Meng-Lin Tsai |
口試委員: |
陳志堅
Jyh-Chien Chen 蔡孟霖 Meng-Lin Tsai 王立義 Lee-Yih Wang |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2020 |
畢業學年度: | 108 |
語文別: | 英文 |
論文頁數: | 66 |
中文關鍵詞: | B位摻雜 、熱注入法 、無機鈣鈦礦量子點 、光致發光量子產率 、光穩定性 |
外文關鍵詞: | B-site doping, hot injection, inorganic perovskite quantum dots, photoluminescence quantum yield, photostability |
相關次數: | 點閱:534 下載:0 |
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鈣鈦礦量子點由於其特殊的光電特性而受到了基礎研究和商業應用的極大關注。然而,CsPbI3 鈣鈦礦量子點遭受到從立方至正交的相變,降低在實際應用當中的潛力。而在這項研究當中,我們證明通過熱注入法可用不同的金屬離子(Sb3+,Zn2+和Yb3+)部分取代Pb,以合成高質量且相穩定的CsPbI3鈣鈦礦量子點。在上述金屬離子摻雜中,摻入Sb的CsPbI3 鈣鈦礦量子點表現出最高的光致發光,量子產率超過70%。此外,摻入Sb的CsPbI3也具有優異的穩定性。我們認為這些高效率且穩定的鈣鈦礦將為光伏,發光二極體和顯示器相關應用將為新的選擇。
Perovskite quantum dots (PQDs) have received significant attention for both fundamental research and commercial applications owing to their intriguing optoelectronic properties. However, CsPbI3 PQDs suffer from cubic to orthorhombic phase transformation, which deteriorates their potential for practical applications. In this work, we demonstrate the partial substitution of Pb2+ with different metal ions (Sb3+, Zn2+ and Yb3+) via hot injection for synthesizing high-quality and phase-stable CsPbI3 PQDs. Among the abovementioned metal ion dopant, Sb-doped CsPbI3 PQDs exhibit the highest photoluminescence (PL) with quantum yield (QY) exceeding 70%. Moreover, Sb-doped CsPbI3 possesses excellent stability. This study shows that these highly efficient and stable perovskites can open up new opportunities in photovoltaics, light-emitting diodes, and display-related applications.
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