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Bright tunable luminescence of Sb3+ doping in zero-dimensional lead-free halide Cs3ZnCl5 perovskite crystals
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-06-08 , DOI: 10.1039/d2dt01243j Xiaoxia Liu 1 , Weibing Zhang 1 , Rui Xu 1 , Jiayu Tu 1 , Guoyong Fang 1 , Yuexiao Pan 1
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-06-08 , DOI: 10.1039/d2dt01243j Xiaoxia Liu 1 , Weibing Zhang 1 , Rui Xu 1 , Jiayu Tu 1 , Guoyong Fang 1 , Yuexiao Pan 1
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Lead-free zero-dimensional (0D) perovskite nanocrystals (NCs) with isolated octahedral structures have attracted considerable attention due to their unique photoelectric properties, such as highly efficient emissions with broadband features. A series of phosphors composed of Sb3+-doped 0D perovskite crystals Cs3ZnCl5 with wavelength-tunable emission spectra have been obtained using a facile recrystallization method at room temperature in air. By controlling the doping concentration of Sb3+ in Cs3ZnCl5 lattice, bright emissions from red to orange have been achieved under excitation at 320 nm due to the expansion of the crystal lattice, and the emission excited at 275 nm is bluish-white, spanning the full visible region. Inductively coupled plasma emission spectrometry (ICP) demonstrates the Sb3+ substitutes for Zn2+ rather than Cs+ due to the similar charges and ionic radii. The luminescence performance of phosphor Cs3ZnCl5:Sb3+ can be improved obviously by replacing 3 mol% of Cs+ with Rb+ or K+ due to the further distortion of the crystal lattice. The present approach allows the synthesis of large-scale emissive lead-free 0D perovskites activated by Sb3+ with tunable luminescence color.
中文翻译：
Sb3+ 掺杂在零维无铅卤化物 Cs3ZnCl5 钙钛矿晶体中的明亮可调发光
具有孤立八面体结构的无铅零维（0D）钙钛矿纳米晶体（NC）由于其独特的光电特性（例如具有宽带特征的高效发射）而引起了广泛关注。采用简单的再结晶方法，在室温下在空气中获得了一系列由Sb 3+掺杂的0D钙钛矿晶体Cs 3 ZnCl 5组成的具有波长可调发射光谱的荧光粉。通过控制Sb 3+在Cs 3 ZnCl 5中的掺杂浓度由于晶格的膨胀，在 320 nm 激发下实现了从红色到橙色的明亮发射，而在 275 nm 激发的发射为蓝白色，跨越整个可见区域。电感耦合等离子体发射光谱法 (ICP) 证明由于相似的电荷和离子半径，Sb 3+替代了 Zn 2+而不是 Cs + 。Cs 3 ZnCl 5 :Sb 3+荧光粉的发光性能可以通过用Rb +或K +代替3 mol%的Cs +得到明显改善由于晶格的进一步变形。本方法允许合成由 Sb 3+激活的具有可调发光颜色的大规模发射无铅 0D 钙钛矿。
更新日期：2022-06-08
中文翻译：
Sb3+ 掺杂在零维无铅卤化物 Cs3ZnCl5 钙钛矿晶体中的明亮可调发光
具有孤立八面体结构的无铅零维（0D）钙钛矿纳米晶体（NC）由于其独特的光电特性（例如具有宽带特征的高效发射）而引起了广泛关注。采用简单的再结晶方法，在室温下在空气中获得了一系列由Sb 3+掺杂的0D钙钛矿晶体Cs 3 ZnCl 5组成的具有波长可调发射光谱的荧光粉。通过控制Sb 3+在Cs 3 ZnCl 5中的掺杂浓度由于晶格的膨胀，在 320 nm 激发下实现了从红色到橙色的明亮发射，而在 275 nm 激发的发射为蓝白色，跨越整个可见区域。电感耦合等离子体发射光谱法 (ICP) 证明由于相似的电荷和离子半径，Sb 3+替代了 Zn 2+而不是 Cs + 。Cs 3 ZnCl 5 :Sb 3+荧光粉的发光性能可以通过用Rb +或K +代替3 mol%的Cs +得到明显改善由于晶格的进一步变形。本方法允许合成由 Sb 3+激活的具有可调发光颜色的大规模发射无铅 0D 钙钛矿。
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