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Enhancement in the water resistance and thermal stability of Na3HTiF8:Mn4+ by co-doping with organic amine cations
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-11-22 , DOI: 10.1039/d2dt03438g Daishu Deng 1 , Jun Lei 1 , Yuelan Li 1 , Lin Wang 1 , Tianman Wang 1 , Huizhong Wen 1 , Sen Liao 1, 2 , Yingheng Huang 1, 2
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-11-22 , DOI: 10.1039/d2dt03438g Daishu Deng 1 , Jun Lei 1 , Yuelan Li 1 , Lin Wang 1 , Tianman Wang 1 , Huizhong Wen 1 , Sen Liao 1, 2 , Yingheng Huang 1, 2
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Mn4+-doped fluoride red light phosphors are widely utilized in various fields, and their luminous performance is influenced by their stability in high humidity and temperature environments. By incorporating TEOAH+ (TEOAH+ = (HOCH2CH2)3NH+) into the Na2TiF6 matrix, Na3HTiF8:Mn4+,TEOAH+ with improved thermal stability and water resistance was synthesized. Enhancement in the luminescence thermal stability is supported by its strong negative thermal quenching (NTQ) effect, which is attributed to the phonon-induced mechanism wherein the probability of radiative transitions increases much faster than the probability of non-radiative transitions. Additionally, the integrated emission intensity of the optimal sample Na3HTiF8:Mn4+,0.15TEOAH+ was maintained at 70.1% after being immersed in water for 360 min, which may be attributed to the addition of TEOAH+ cations in the structure, thus increasing its structural rigidity. The prototype light-emitting diode (LED) has a narrow emission band, 88.6% color gamut, and 83.1 lm W−1 light efficiency, according to the National Television Standards Committee (NTSC). The qualities of the phosphor make it an ideal candidate for back-lighting devices.
中文翻译：
有机胺阳离子共掺杂提高Na3HTiF8:Mn4+的耐水性和热稳定性
Mn 4+掺杂氟化物红光荧光粉广泛应用于各个领域，其发光性能受其在高湿高温环境下的稳定性影响。通过将TEOAH + (TEOAH + = (HOCH 2 CH 2 ) 3 NH + )结合到Na 2 TiF 6基质中，Na 3 HTiF 8 :Mn 4+ ,TEOAH +合成了具有改进的热稳定性和耐水性。其强负热猝灭 (NTQ) 效应支持发光热稳定性的增强，这归因于声子诱导机制，其中辐射跃迁的概率比非辐射跃迁的概率增加得快得多。此外，最佳样品Na 3 HTiF 8 :Mn 4+ ,0.15TEOAH +在水中浸泡360 min后的综合发射强度保持在70.1%，这可能是由于添加了TEOAH +结构中的阳离子，从而增加其结构刚度。根据国家电视标准委员会 (NTSC)，原型发光二极管 (LED) 具有窄发射带、88.6% 色域和 83.1 lm W -1光效率。磷光体的特性使其成为背光照明设备的理想选择。
更新日期：2022-11-22
中文翻译：
有机胺阳离子共掺杂提高Na3HTiF8:Mn4+的耐水性和热稳定性
Mn 4+掺杂氟化物红光荧光粉广泛应用于各个领域，其发光性能受其在高湿高温环境下的稳定性影响。通过将TEOAH + (TEOAH + = (HOCH 2 CH 2 ) 3 NH + )结合到Na 2 TiF 6基质中，Na 3 HTiF 8 :Mn 4+ ,TEOAH +合成了具有改进的热稳定性和耐水性。其强负热猝灭 (NTQ) 效应支持发光热稳定性的增强，这归因于声子诱导机制，其中辐射跃迁的概率比非辐射跃迁的概率增加得快得多。此外，最佳样品Na 3 HTiF 8 :Mn 4+ ,0.15TEOAH +在水中浸泡360 min后的综合发射强度保持在70.1%，这可能是由于添加了TEOAH +结构中的阳离子，从而增加其结构刚度。根据国家电视标准委员会 (NTSC)，原型发光二极管 (LED) 具有窄发射带、88.6% 色域和 83.1 lm W -1光效率。磷光体的特性使其成为背光照明设备的理想选择。
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