santa@nplindia.org | National Physical Laboratory

DP/DU No.:

4.1 Electronic Materials/LMD

Current position and Address :

Luminescent Materials & Devices Group

Educational Qualifications:

Degree	Subject	University/Institute	Year
B.Sc	Physics (Honours) Chemistry Mathematics	University of North Bengal	1974
M.Sc	Physics	Banaras Hindu University	1977
Ph.D	Physics	Banaras Hindu University	1984

Academics/Research Experience:

Year /Duration		Research field	Institute ( in India/Abroad)	Fellowship
1978-1984	7 Yrs	Growth, Structure and electronic properties of Tin Dichalcogenide Crystals ( Doctoral thesis, BHU	Banaras Hindu University , Varanasi , India	CSIR JRF, SRF
1986-1989	3 Yrs	Geochronology of the great Indian (Thar) desert by Thermo luminescence (TL) dating of natural minerals, Archaeological dating	Physical Research Laboratory (PRL) Ahmedabad , India	CSIR Pool Officer
1989-1990	1 Yrs	Radiation induced effects in natural Quartz	Physical Research Laboratory , India	Post Doctoral Fellowship of PRL
1990-1992	1.5 Yrs	TL dating of Thar desert	Dept. of Physics, Gujarat Univ and PRL, India	CSIR Research Associate
1992-2002	10 Yrs	1. Development, maintenance & operation of Iodine frequency stabilized He-Ne laser at 633nm as the primary standard of Length, Frequency calibration of 633 nm He-Ne lasers against Iodine stabilized lasers by heterodyne beat frequency technique 2. Development of frequency stabilized diode lasers for laser cooling of alkali atoms	Length Standard, National Physical Laboratory , India	Scientist C & EI
1995	4 Months	Beat frequency expt. & software development for intercomparison and dissemination of primary standard of Length	PTB, Germany	Visiting Scientist under NPL-PTB Technical Cooperation Programme
1999	3 Months	Research on a Frequency stabilized diode laser spectrometer in the visible region and its application to the precision spectroscopy of Ca.	NRLM, Japan	STA Fellow of Japan Govt.
2002-2005	3Yrs	Development of laser cooled Atomic Fountain Frequency Standard	Time & Frequency Standard, NPL, India	Scientist EI & EII
2005- Till date	ongoing	Development of luminescent materials i.e., Phosphors in bulk and nanocrystalline form for various applications and material properties	Luminescent Materials & Devices Group, NPL, India	Scientist EII & F

Date of Joining NPL: 23 rd June, 1992

No. of Publications:

SCI Journals	Conference/ proceedings	Books	Total
29 (SCI) 10 (non SCI)	91	Nil	130

No. of Patents : Nil

Current Activity :
(1) Development of high efficiency Plasma Display Panel (PDP) Phosphors
(2) Development of Phosphor/nanophosphor for solar cell applications
(3) Development of nanophosphor of II –VI semiconductor for light emitting devices
(4) Development and study of luminescent, DMS nanoparticles of doped ZnO
(5) Synthesis of bulk and nanophosphor for white LED
(6) Time resolved Spectroscopy of Phosphors

Honours and Awards:
National Merit Scholarship from 1972 – 1977
STA Fellowship 1999

Any other information: Externally funded Research Projects

(1) “Development of next generation Plasma Display Panel Technology
and 50” High Definition (HD) TV Prototype”
NMITLI Project of CSIR in association with industrial partner SAMTEL Colour
Lab Ltd., Ghaziabad
(Sub) Title of the Project - “Synthesis of Phosphors for PDP”
for Partner Organization National Physical Laboratory
Duration 01.04.07 – 31.03.10

Role - Principal Investigator :

(2) “ Development of frequency stabilized diode lasers for laser cooling of alkali atoms”
BRNS funded Project
Duration 18.01.99 – 17.06.02

Achievements

Tender Notifications

Conference