ZnS:Sm grown by metalorganic chemical vapor deposition with Cl codoping
ZnS:Sm grown by metalorganic chemical vapor deposition with Cl codoping
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Cl 共掺杂金属有机化学气相沉积法生长 ZnS:Sm
DOI：
10.1063/1.364078
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发表时间：
1995
影响因子：
3.2
通讯作者：
T. Hattori
中科院分区：
文献类型：
--
作者：
A. Kato;M. Katayama;A. Mizutani;N. Ito;T. Hattori
以二乙基锌、硫化氢、Tm(Thd)3(thd=2，2，6，6-四甲基-3，5-庚二酮)和HCl为原料，采用金属有机化学气相沉积(MOCVD)法生长了ZNS：Tm和ZnS：Tm，Cl薄膜。ZnS：Tm不含氧，氧可能是通过THd-自由基引入的。因此，它只有可能与本征缺陷有关的无共掺杂剂的Tm3+发光中心。电致发光(EL)谱显示，除了原有的发光峰外，还有三条卫星发光线，表明存在Tm-Cl络合物中心。相反，在宿主激发下，ZnS：Tm，Cl的光致发光(PL)光谱没有明显的卫星发光线。因此，虽然Tm-Cl络合物中心的Tm离子被认为是被氯或某些氯离子诱导的缺陷所补偿的电荷，但它们在发光激发中相当不活跃，而在电致发光激发中却相当活跃。MOCVD生长的ZnS：Sm和ZnS：Sm，Cl[A.Kato，M.Katayama，A.Mizutani，N.
ZnS:Tm and ZnS:Tm,Cl thin films were grown by metalorganic chemical vapor deposition (MOCVD), using diethylzinc, H2S, Tm(thd)3 (thd=2,2,6,6-tetramethyl-3,5-heptanedione), and HCl. The ZnS:Tm did not contain oxygen which might be introduced through the thd-radical. It thus has only codopant-free Tm3+ luminescent centers probably associated with native defects. The electroluminescence (EL) spectrum of the ZnS:Tm,Cl showed three satellite emission lines in addition to the original emission of the ZnS:Tm, indicating the existence of Tm–Cl complex centers. In contrast, the photoluminescence (PL) spectrum of the ZnS:Tm,Cl under host excitation showed no discernible satellite emission lines. Hence, though the Tm ions in the Tm–Cl complex centers are expected to be charge compensated by Cl or a certain Cl-induced defect, they are rather inactive in the PL excitation while active in the EL excitation. The same properties were observed for the MOCVD-grown ZnS:Sm and ZnS:Sm,Cl [A. Kato, M. Katayama, A. Mizutani, N. ...