Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants

Siddhartha Ghosh; Surajit Saha; Zhiqi Liu; M. Motapothula; Abhijeet Patra; Nikolai Yakovlev; Yao Cai; Saurav Prakash; Xiao Hu Huang; Chuan Beng Tay; Chun Xiao Cong; Thirumaleshwara Bhatt; Surani B. Dolmanan; Jianqiang Chen; Weiming Lü; Zhen Huang; Sudhiranjan Tripathy; Soo Jin Chua; Ting Yu; Mark Asta; A. Ariando; T. Venkatesan

doi:10.1038/srep36352

Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants

Siddhartha Ghosh^*
, Surajit Saha
, Zhiqi Liu
, M. Motapothula
, Abhijeet Patra
, Nikolai Yakovlev
, Yao Cai
, Saurav Prakash
, Xiao Hu Huang
, Chuan Beng Tay
, Chun Xiao Cong
, Thirumaleshwara Bhatt
, Surani B. Dolmanan
, Jianqiang Chen
, Weiming Lü
, Zhen Huang
, Sudhiranjan Tripathy
, Soo Jin Chua
, Ting Yu
, Mark Asta

A. Ariando, T. Venkatesan

^*Corresponding author for this work

National University of Singapore
Indian Institute of Science Education and Research Bhopal
Beihang University
Agency for Science, Technology and Research, Singapore
University of California at Berkeley
Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In this study we report the existence of novel ultraviolet (UV) and blue emission in rare-earth based perovskite NdGaO₃ (NGO) and the systematic quench of the NGO photoluminescence (PL) by Ce doping. Study of room temperature PL was performed in both single-crystal and polycrystalline NGO (substrates and pellets) respectively. Several NGO pellets were prepared with varying Ce concentration and their room temperature PL was studied using 325 nm laser. It was found that the PL intensity shows a systematic quench with increasing Ce concentration. XPS measurements indicated that nearly 50% of Ce atoms are in the 4+ state. The PL quench was attributed to the novel concept of super hydrogenic dopant (SHD)", where each Ce⁴⁺ ion contributes an electron which forms a super hydrogenic atom with an enhanced Bohr radius, due to the large dielectric constant of the host. Based on the critical Ce concentration for complete quenching this SHD radius was estimated to be within a range of 0.85 nm and 1.15 nm whereas the predicted theoretical value of SHD radius for NdGaO3 is ∼1.01 nm.

Original language	English
Article number	36352
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep36352
State	Published - 3 Nov 2016
Externally published	Yes

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Ghosh, S., Saha, S., Liu, Z., Motapothula, M., Patra, A., Yakovlev, N., Cai, Y., Prakash, S., Huang, X. H., Tay, C. B., Cong, C. X., Bhatt, T., Dolmanan, S. B., Chen, J., Lü, W., Huang, Z., Tripathy, S., Chua, S. J., Yu, T., ... Venkatesan, T. (2016). Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants. Scientific Reports, 6, Article 36352. https://doi.org/10.1038/srep36352

@article{ee0fbe9890f046baaca50fa7c20858dd,

title = "Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants",

abstract = "In this study we report the existence of novel ultraviolet (UV) and blue emission in rare-earth based perovskite NdGaO3 (NGO) and the systematic quench of the NGO photoluminescence (PL) by Ce doping. Study of room temperature PL was performed in both single-crystal and polycrystalline NGO (substrates and pellets) respectively. Several NGO pellets were prepared with varying Ce concentration and their room temperature PL was studied using 325 nm laser. It was found that the PL intensity shows a systematic quench with increasing Ce concentration. XPS measurements indicated that nearly 50\% of Ce atoms are in the 4+ state. The PL quench was attributed to the novel concept of super hydrogenic dopant (SHD){"}, where each Ce4+ ion contributes an electron which forms a super hydrogenic atom with an enhanced Bohr radius, due to the large dielectric constant of the host. Based on the critical Ce concentration for complete quenching this SHD radius was estimated to be within a range of 0.85 nm and 1.15 nm whereas the predicted theoretical value of SHD radius for NdGaO3 is ∼1.01 nm.",

author = "Siddhartha Ghosh and Surajit Saha and Zhiqi Liu and M. Motapothula and Abhijeet Patra and Nikolai Yakovlev and Yao Cai and Saurav Prakash and Huang, \{Xiao Hu\} and Tay, \{Chuan Beng\} and Cong, \{Chun Xiao\} and Thirumaleshwara Bhatt and Dolmanan, \{Surani B.\} and Jianqiang Chen and Weiming L{\"u} and Zhen Huang and Sudhiranjan Tripathy and Chua, \{Soo Jin\} and Ting Yu and Mark Asta and A. Ariando and T. Venkatesan",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2016.",

year = "2016",

month = nov,

day = "3",

doi = "10.1038/srep36352",

language = "英语",

volume = "6",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Research",

}

Ghosh, S, Saha, S, Liu, Z, Motapothula, M, Patra, A, Yakovlev, N, Cai, Y, Prakash, S, Huang, XH, Tay, CB, Cong, CX, Bhatt, T, Dolmanan, SB, Chen, J, Lü, W, Huang, Z, Tripathy, S, Chua, SJ, Yu, T, Asta, M, Ariando, A & Venkatesan, T 2016, 'Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants', Scientific Reports, vol. 6, 36352. https://doi.org/10.1038/srep36352

TY - JOUR

T1 - Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3

T2 - Concept of Super-Hydrogenic Dopants

AU - Ghosh, Siddhartha

AU - Saha, Surajit

AU - Liu, Zhiqi

AU - Motapothula, M.

AU - Patra, Abhijeet

AU - Yakovlev, Nikolai

AU - Cai, Yao

AU - Prakash, Saurav

AU - Huang, Xiao Hu

AU - Tay, Chuan Beng

AU - Cong, Chun Xiao

AU - Bhatt, Thirumaleshwara

AU - Dolmanan, Surani B.

AU - Chen, Jianqiang

AU - Lü, Weiming

AU - Huang, Zhen

AU - Tripathy, Sudhiranjan

AU - Chua, Soo Jin

AU - Yu, Ting

AU - Asta, Mark

AU - Ariando, A.

AU - Venkatesan, T.

PY - 2016/11/3

Y1 - 2016/11/3

N2 - In this study we report the existence of novel ultraviolet (UV) and blue emission in rare-earth based perovskite NdGaO3 (NGO) and the systematic quench of the NGO photoluminescence (PL) by Ce doping. Study of room temperature PL was performed in both single-crystal and polycrystalline NGO (substrates and pellets) respectively. Several NGO pellets were prepared with varying Ce concentration and their room temperature PL was studied using 325 nm laser. It was found that the PL intensity shows a systematic quench with increasing Ce concentration. XPS measurements indicated that nearly 50% of Ce atoms are in the 4+ state. The PL quench was attributed to the novel concept of super hydrogenic dopant (SHD)", where each Ce4+ ion contributes an electron which forms a super hydrogenic atom with an enhanced Bohr radius, due to the large dielectric constant of the host. Based on the critical Ce concentration for complete quenching this SHD radius was estimated to be within a range of 0.85 nm and 1.15 nm whereas the predicted theoretical value of SHD radius for NdGaO3 is ∼1.01 nm.

AB - In this study we report the existence of novel ultraviolet (UV) and blue emission in rare-earth based perovskite NdGaO3 (NGO) and the systematic quench of the NGO photoluminescence (PL) by Ce doping. Study of room temperature PL was performed in both single-crystal and polycrystalline NGO (substrates and pellets) respectively. Several NGO pellets were prepared with varying Ce concentration and their room temperature PL was studied using 325 nm laser. It was found that the PL intensity shows a systematic quench with increasing Ce concentration. XPS measurements indicated that nearly 50% of Ce atoms are in the 4+ state. The PL quench was attributed to the novel concept of super hydrogenic dopant (SHD)", where each Ce4+ ion contributes an electron which forms a super hydrogenic atom with an enhanced Bohr radius, due to the large dielectric constant of the host. Based on the critical Ce concentration for complete quenching this SHD radius was estimated to be within a range of 0.85 nm and 1.15 nm whereas the predicted theoretical value of SHD radius for NdGaO3 is ∼1.01 nm.

UR - https://www.scopus.com/pages/publications/84994384392

U2 - 10.1038/srep36352

DO - 10.1038/srep36352

M3 - 文章

AN - SCOPUS:84994384392

SN - 2045-2322

VL - 6

JO - Scientific Reports

JF - Scientific Reports

M1 - 36352

ER -

Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants

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