Spectroscopic study of Eu-doped nano semiconductors prepared by laser ablation or RF sputtering / (رقم التسجيلة. 48088)
[ عرض عادي ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02845cam a2200349 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EG-GiCUC |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223031102.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 141102s2013 ua dh f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GiCUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GiCUC |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposite |
| 097 ## - Thesis Degree | |
| Thesis Level | Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.24.12.Ph.D.2013.Sa.S |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Samah Mohamed Hamdy Ahmed |
| 245 10 - TITLE STATEMENT | |
| Title | Spectroscopic study of Eu-doped nano semiconductors prepared by laser ablation or RF sputtering / |
| Statement of responsibility, etc. | Samah Mohamed Hamdy Ahmed ; Supervised Mostafa Elsayed , Lotfia Elnadi , Yahia Badr |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | دراسة طيفية لاشتباه الموصلات النانومترية والمشابة باليورابيوم والمحضرة بطريقة الليزر الاقتلاعى أو التطاير بواسطة موجات الراديو |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Cairo : |
| Name of publisher, distributor, etc. | Samah Mohamed Hamdy Ahmed , |
| Date of publication, distribution, etc. | 2013 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 170 P. : |
| Other physical details | charts , facsimiles ; |
| Dimensions | 25cm |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D.) - Cairo University - National Institute of Laser Enhanced Sciences - Department of Laser Science and Interaction |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Rare-earth-doped wide-bandgap semiconductors are an interesting class of inorganic luminescent materials with complex optical properties and widespread potential applications in optoelectronics. Undoped and Eu-doped GaN powders have been synthesized by the co-precipitation method followed by nitridation at high temperature. The X-ray diffraction (XRD) patterns reveal the single-phase wurtzite structure of the synthesized undoped and Eu-doped GaN powders. The morphology of the samples was examined by the field emission scanning electron microscope (FE-SEM) and the high resolution transmission electron microscope (HR-TEM), and it was shown that the micron-sized particles are composed of agglomerated nano-crystallites. This agglomeration may be due to the absence of any surfactant during the preparation. Under above bandgap excitation, the room-temperature photoluminescence (PL) of both samples show the characteristic GaN band-edge emission peak at 363 nm, as well as a broad defect-related emission band centered at around 415 nm. The Eu-doped GaN sample, under below bandgap excitation at 464 nm, exhibited red emission peaks at 593 nm and 616 nm, corresponding to the ⁵D₀ {u2192} ⁷F₁ and ⁵D₀ {u2192} ⁷F₂ transitions, respectively, within the 4f-shell of Eu³⁺ ions ions |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Rare-earth ions |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Semiconductors |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Zinc oxide |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Lotfia Elnadi , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mostafa Elsayed , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Yahia Badr , |
| Relator term | |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Aml |
| Reviser | Cataloger |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Nazla |
| Reviser | Revisor |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type | Copy number |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.24.12.Ph.D.2013.Sa.S | 01010110063855000 | 22.09.2023 | Thesis | ||
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | مخـــزن الرســائل الجـــامعية - البدروم | 11.02.2024 | Cai01.24.12.Ph.D.2013.Sa.S | 01020110063855000 | 22.09.2023 | CD - Rom | 63855.CD |