Papers by Chinmay Routray
Thin Solid Films, 2013
ABSTRACT The paper presents the influence of oxygen on the properties of cadmium sulfide thin fil... more ABSTRACT The paper presents the influence of oxygen on the properties of cadmium sulfide thin film included during the deposition of CdS film using chemical bath deposition. The structural, surface morphological and optical properties were studied and a comparative study is presented between CdS film deposited without oxygen and with oxygen. The deposition temperature was kept 70 °C for both the deposition sequence and the de-position time was 40 min. The film thickness obtained was nearly 100 nm for both the cases. The average transmission was nearly 80% for both sets of film. The band gap calculated from transmission data shows a significant increase in the band gap for the CdS film deposited with the inclusion of oxygen. The scanning electron microscope micrograph shows reduced pinholes for the film grown with oxygen. X-ray diffraction and Raman studies show better crystallinity for the CdS film grown with oxygen. The CdS film deposited in the presence of oxygen can be a better choice for cadmium telluride (CdTe) and copper indium gallium diselenide Cu(In,Ga)Se 2 based thin film solar cells.
CdTe based solar cell is one of the leading thin film technology today. Polycrystalline thin film... more CdTe based solar cell is one of the leading thin film technology today. Polycrystalline thin film CdTe continues to be a leading material for the development of cost effective and reliable photovoltaics. Thin film CdTe solar cells and modules are typically heterojunctions with CdS being the n-type partner, or window layer. The preferred configuration for CdTe solar cells is the superstrate structure. Due to its basic optical electronic, and chemical properties, CdTe has become the base material for high-efficiency, low-cost thin film solar cells using robust, high throughput manufacturing techniques. CdTe compound semiconductors are important for terrestrial applications because of their high efficiency, long-term stable performance and potential for low-cost production. Because of the high absorption coefficient (∼10−5 cm−1) a thin layer of ∼2 μm is sufficient to absorb the useful part of the spectrum. Highest record efficiencies 16.5% has been achieved. The present paper review th...
2019 Sixteenth International Conference on Wireless and Optical Communication Networks (WOCN), 2019
MCPTX (Mission Critical Push to X) is catering the need of group communication in different kind ... more MCPTX (Mission Critical Push to X) is catering the need of group communication in different kind of emergency situations. Mission Critical (MC) operations in the civil domain comprise of activities handled by police officers, fire fighters, Search & Rescue teams, Medical Emergency support personnel, Civic Protection etc. There are low priority and high priority users. For Low priority user, it is always a problem to transmit the voice on priority under critical situation. In this paper, authors have proposed a method to support auxiliary voice from lower priority participants during MCPTX group call.
The paper presents the influence of oxygen on the properties of cadmium sulfide thin film include... more The paper presents the influence of oxygen on the properties of cadmium sulfide thin film included during the deposition of CdS film using chemical bath deposition. The structural, surface morphological and optical properties were studied and a comparative study is presented between CdS film deposited without oxygen and with oxygen. The deposition temperature was kept 70°C for both the deposition sequence and the deposition time was 40 min. The film thickness obtained was nearly 100 nm for both the cases. The average transmission was nearly 80% for both sets of film. The band gap calculated from transmission data shows a significant increase in the band gap for the CdS film deposited with the inclusion of oxygen. The scanning electron microscope micrograph shows reduced pinholes for the film grown with oxygen. X-ray diffraction and Raman studies show better crystallinity for the CdS film grown with oxygen. The CdS film deposited in the presence of oxygen can be a better choice for cadmium telluride (CdTe) and copper indium gallium diselenide Cu(In,Ga)Se 2 based thin film solar cells.
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CdTe based solar cell is one of the leading thin film technology today. Polycrystalline thin film... more CdTe based solar cell is one of the leading thin film technology today. Polycrystalline thin film CdTe continues to be a leading material for the development of cost effective and reliable photovoltaics. Thin film CdTe solar cells and modules are typically heterojunctions with CdS being the n-type partner, or window layer. The preferred configuration for CdTe solar cells is the superstrate structure. Due to its basic optical electronic, and chemical properties, CdTe has become the base material for high-efficiency, low-cost thin film solar cells using robust, high throughput manufacturing techniques. CdTe compound semiconductors are important for terrestrial applications because of their high efficiency, long-term stable performance and potential for low-cost production. Because of the high absorption coefficient (~10 -5 cm -1 ) a thin layer of ~2 μm is sufficient to absorb the useful part of the spectrum. Highest record efficiencies 16.5% has been achieved. The present paper review the progress made in the CdTe based solar cells
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Papers by Chinmay Routray