Comment on “Zero-thermal-quenching and photoluminescence tuning with assistance of carriers from defect cluster traps” by Chen et al., J. Mater. Chem. C, 2018, 6, 10687–10692

2020 ◽  
Vol 8 (3) ◽  
pp. 1151-1152
Author(s):  
Yu Xiao ◽  
Zhendong Hao

Chen et al. (J. Mater. Chem. C, 2018, 6, 10687–10692) reported that the zero-thermal-quenching behavior of Tb3+ was the compensation of different trap depths. In this comment, we argue that this unique behavior is just an intrinsic property of Tb3+.

2020 ◽  
Vol 8 (3) ◽  
pp. 1153-1156
Author(s):  
Yali Chen ◽  
Binxun Yu ◽  
Jing Gou ◽  
Shengzhong Frank Liu

In this response to the comments on our article, a series of Sr8Zn1−xSc(PO4)7:12%Tb3+ (SZ1−xSPO:12%Tb3+) phosphors were synthesized, and their photoluminescence behavior confirmed that zinc vacancy defects play a vital role in the SZ1−xSPO:12%Tb3+ phosphor.


2019 ◽  
Vol 7 (35) ◽  
pp. 11040-11040 ◽  
Author(s):  
Yali Chen ◽  
Binxun Yu ◽  
Jing Gou ◽  
Shengzhong Frank Liu

Correction for ‘Zero-thermal-quenching and photoluminescence tuning with the assistance of carriers from defect cluster traps’ by Yali Chen et al., J. Mater. Chem. C, 2018, 6, 10687–10692.


2020 ◽  
Vol 49 (33) ◽  
pp. 11775-11777
Author(s):  
Zehua Liu ◽  
Zhiyong Mao ◽  
Dajian Wang

The negative thermal quenching of Na3Sc2(PO4)3:Eu2+ phosphor was confirmed as an intrinsic property, instead of a pitfall caused by optical path length variation, as argued in the comment on our published paper (Dalton Trans., 2020, 49, 3615–3621).


Author(s):  
Shirun Yan

Abstract Adachi (ECS J. Solid State Sci. Technol.,10, 076007(2021)) reported that an anomalous enhancement of integrated intensity of Mn4+ luminescence (IPL) in A2XF6:Mn4+ phosphors with increasing lattice temperature was an intrinsic property of the phosphors due to the increased phonon number that makes it possible to gain the parity and spin-forbidden 2Eg → 4A2g transitions.I argue in this comment that it seems still unconvincing to ascribe the anomalous increase of IPL with temperature as an intrinsic property of Mn4+-doped fluorides. Since theoretical derivations of the formulas expressing temperature dependence of the intensities were based on an unjustified assumption.


2018 ◽  
Vol 6 (40) ◽  
pp. 10687-10692 ◽  
Author(s):  
Yali Chen ◽  
Binxun Yu ◽  
Jing Gou ◽  
Shengzhong Frank Liu

The zero-thermal-quenching behavior at high temperature up to 225 °C was benefited from the carriers captured by deeper traps, which can be verified by thermoluminescence spectra.


2014 ◽  
Vol 33 (10) ◽  
pp. 723-727
Author(s):  
M. Westermann ◽  
I. W. Husstedt ◽  
A. Okegwo ◽  
S. Evers

SummaryEvent-related potentials (ERP) are regarded as age dependent. However, it is not known whether this is an intrinsic property of ERP or an extrinsic factor. We designed a setting in which ERP were evoked using a modified oddball paradigm with highly differentiable and detectable target and non-target stimuli. A total of 98 probands were enrolled in this study. We evaluated the latency and amplitude of the P3 component of visually evoked ERP. The mean P3 latency was 294 ± 28 ms and was not related to age (r = –0.089; p = 0.382; Spearman-rank-correlation). The P3 amplitude was related to age in the total sample (r = –0.323; p = 0.001; Spearmanrank-correlation) but not in the probands under the age of 60 years. There were no significant differences regarding sex. Our findings suggest that ERP are not age dependent if highly differentiable and detectable stimuli are used. This should be considered when normal values of ERP are created for clinical use.


2014 ◽  
Author(s):  
Domenico Iuso ◽  
Paola Toschi ◽  
Debora Agata Anzalone ◽  
Marta Czernik ◽  
Grazyna Ewa Ptak ◽  
...  

2011 ◽  
Vol 42 (2) ◽  
pp. 56-64 ◽  
Author(s):  
Remigiusz Szczepanowski

Conscious access to fear-relevant information is mediated by thresholdThe present report proposed a model of access consciousness to fear-relevant information according to which there is a threshold for emotional perception beyond that the subject makes hits with no false alarm. The model was examined by having the participants performed a confidence-ratings masking task with fearful faces. Measures of the thresholds for conscious access were taken by looking at the receiver operating characteristics (ROC) curves generated from a three-state low- and high-threshold (3-LHT) model by Krantz. Indeed, the analysis of the masking data revealed that the ROCs had threshold-like-nature (a two-limb shape) rather continuous (a curvilinear shape) challenging in this fashion the classical signal-detection view on perceptual processing. Moreover, the threshold ROC curve exhibited the specific y-intercepts relevant to conscious access performance. The study suggests that the threshold can be an intrinsic property of conscious access, mediating emotional contents between perceptual states and consciousness.


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