Please wait, while we are loading the content...
| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Zhai, Guangmei Jia, Wei Xu, Bingshe Shang, Lin Ma, Shufang Wang, Haotian Jia, Zhigang Liang, Jian Li, Xuemin |
| Copyright Year | 2016 |
| Abstract | Three-dimensional (3D) GaN nanostructures with well-aligned nano-cones have been prepared via a laser interference lithography + inductively coupled plasma (ICP) etching method. The effect of radio-frequency (RF) power and KOH solution etching on morphologies and optical properties of the GaN nano-cones has been studied by scanning electron microscopy, energy dispersive spectroscopy, room-temperature and low-temperature photoluminescence (PL) measurements. Our results show that the sidewall obliquity of GaN nano-cones increases from 63° to 80° with the increase of RF power from 60 W to 120 W, while their height and PL intensity peak at the RF power of 80 W. At 10 K, the excitonic interband ΓV9–ΓC7 and ΓV7 (upper band)–ΓC7 transitions were clearly observed for the GaN nano-cones, which were found to be 3.487 eV and 3.493 eV, respectively. After etching with KOH solution the nano-cones' surface was obviously roughened and their PL intensity increased by around 60%, although their internal quantum efficiency determined by low-temperature PL measurement was only increased by 6%. The enhanced PL intensity could be mainly ascribed to the improved light extraction efficiency and/or light absorption efficiency. It is expected that the 3D GaN nanostructures prepared in the work can offer a new growth template candidate for the fabrication of GaN based nanoLEDs. |
| Starting Page | 43272 |
| Ending Page | 43277 |
| Page Count | 6 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 6 |
| Issue Number | 49 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra01280a |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Chemical milling Spectroscopy Quantum Inductively coupled plasma KOH Laser Interference lithography Photoluminescence Electronvolt Gallium nitride Scanning electron microscope Three-dimensional space |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|