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III-nitride nanowires for solar light harvesting: A review
Chatterjee, U.,Park, Ji-Hyeon,Um, Dae-Young,Lee, Cheul-Ro PERGAMON 2017 RENEWABLE AND SUSTAINABLE ENERGY REVIEWS Vol.79 No.-
<P><B>Abstract</B></P> <P>The world needs economical and sustainable alternate energy sources to combat the irreversible phenomenon like global warming. Solar photovoltaic technology, which converts sunlight directly to electricity, is the most potential candidate for alternate energy source. On the other hand, increasing global pollution due to energy emission compels the worldwide researcher community to deliberate over various green fuels. Recently due to numerous advancements hydrogen fuel cells are thought to be the green power source of 21st century and may develop the hydrogen economy. However, despite of many promising breakthroughs energy production harvesting solar light does not find wide spread applications due to their low efficiency associated with unsuccessful utilization of entire solar spectrum which leads researchers to consider materials with multi energy band gap. Due to their unique property of band gap tuning (~6.2eV for AlN to ~0.65eV for InN) III-nitride nanowire structures have been extensively investigated in the past decade in pursuit of multi band gap materials. Intensive research efforts have been paid into studying GaN, InN, InGaN, AlN and their different compositions. It is clear that this material family has enormous potential in harvesting solar energy to light the new dawn of clean and sustainable energy sources. In this article, we present an overview on recent advancements in III-nitride solar energy devices. We have made a review for more than 200 articles in this regard. All the recent developments in realizing III-nitride nanostructures and novel yet recent advances in III-nitride solar devices are reviewed in and its subsequent subsections. The III-nitride nanowire photovoltaic devices are discussed in whereas deals with the current progresses in artificial photosynthesis involving III-nitride nanowires. Finally in the present challenges in realizing high efficiency III-nitride nanowire solar energy devices are summarized along with paths for future work.</P>
Rajkumar, U.,Reddy, B.L.N.,Rajaravindra, K.S.,Niranjan, M.,Bhattacharya, T.K.,Chatterjee, R.N.,Panda, A.K.,Reddy, M.R.,Sharma, R.P. Asian Australasian Association of Animal Productio 2010 Animal Bioscience Vol.23 No.7
A comprehensive study was undertaken to evaluate the effect of naked neck (Na) gene on immune competence, serum biochemical parameters and carcass quality traits in three genotypes (NaNa, Nana and nana) of the naked neck chicken under a tropical climate (Southern India). Sixty day-old chicks (20 from each genotype) were selected randomly and reared under similar environmental conditions up to eight weeks of age. The cell mediated immune (CMI) response to phytohaemoagglutinin-P (PHA-P) was significantly higher ($p{\lgq}0.01$) in NaNa and Nana genotypes compared to nana birds. The humoral response as measured by antibody titre to sheep red blood cells (SRBC) was also significantly higher in NaNa. The total cholesterol, LDL and VLDL cholesterol levels were significantly ($p{\leq}0.01$) lower whereas HDL cholesterol level was significantly higher in NaNa and Nana compared to nana genotype. The presence of Na allele significantly increased the live weight and dressing yield, and decreased the feather cover and abdominal fat. The naked neck genotypes (NaNa/Nana) performed better than the normal (nana) siblings for almost all the traits studied.
Synthesis of hybrid nanowires comprising uniaxial and coaxial InGaN/GaN MQWs with a nano-cap
Park, J. H.,Chatterjee, U.,Kang, S.,Lee, K.,Kim, J. S.,Lee, C. R. Royal Society of Chemistry 2016 Journal of Materials Chemistry C Vol.4 No.42
<P>We propose a novel hybrid nanostructure which comprises both uniaxial and coaxial multi-quantum wells (MQWs) on nanowires topped with an InGaN nano-cap. The growth process included both top-down and bottom-up approaches followed by the intentional growth of an InGaN nano-cap to offer larger active area. The In composition was optimized to absorb light at green and blue wavelengths by the uniaxial and coaxial quantum wells respectively. Extensive structural and optical characterizations were carried out. Field emission scanning electron microscopy (FE-SEM) revealed a high density of nanowires. High resolution transmission electron microscopy (HR-TEM) images displayed 5 pairs of uniaxial multi-quantum wells, 6 pairs of coaxial multi-quantum wells and the existence of the intended nano-caps. A photoluminescence (PL) spectrum was recorded for the grown structure at room temperature. The resultant emission spectrum comprised two distinct peaks resulting from each of the multi-quantum well assemblies and emission from the nano-cap. Cathodoluminescence (CL) mapping data revealed discrete bright field images of the InGaN nano-caps and uniaxial multi-quantum well structures. Emission peaks for the nano-caps and both of the multi-quantum well structures were observed in the CL point spectrum which in turn corroborated the PL measurement. During an energy-dispersive X-ray (EDX) study, a high composition of In was found in the nano-cap area along with the distinct presence of both types of multi-quantum wells. In addition, to investigate the opto-electronic device applicability of the grown MQW structure, the photocurrent was measured at various light intensities. The photocurrent density was observed to increase linearly with the increasing light power density. Also the photocurrent density was found to be higher for the hybrid structure than a single uniaxial or coaxial assembly.</P>
Study of Mobile Application Development using MVC Framework
Ram Naresh Thakur,U. S. Pandey,Jyotir Moy Chatterjee 한국디지털융합학회 2019 IJICTDC Vol.4 No.2
Mobile Application should be secure, portable, cost-effective and be of good quality. The architecture choice is very important to ensure the quality of the application over time and to reduce development time. Model-View-Controller (MVC) is a very useful for developing Application. It has become the most powerful and leading Programming Architecture for developing a large scale of Application. MVC Developers can trust on the framework that is widely accepted as solutions for recurring problems and used to develop flexible, reusable and modular Application. In this study we investigate the advantage of using MVC Framework when building Mobile Application available on difference devices. In this study compares and contrasts two platforms, iOS and Android Devices, and discusses how to apply the MVC Framework in order to minimize the inherent differences between the platforms.