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Farid Djahli

Bio: Farid Djahli is an academic researcher from Université de Sétif. The author has contributed to research in topics: Photovoltaic system & Antenna (radio). The author has an hindex of 6, co-authored 18 publications receiving 97 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the effect of temperature on thin-film solar cells was investigated using the SCAPS-1D (Solar Cell Capacitance Simulator) and the authors observed an apparent degradation in the open circuit voltage and conversion efficiency with an increase of temperature from 25°C to 70°C.

23 citations

Journal ArticleDOI
TL;DR: In this article, the authors present a theoretical survey of the luminescence downshifting (LDS) approach for the design of monolithic tandem solar cells, where the photovoltaic (PV) glass encapsulation material is replaced with a polymer material of polymethyl methacrylate (PMMA) type which is doped with diverse kinds of organic dyes.
Abstract: The increase in the conversion efficiency of monolithic tandem solar cells is limited by the short-circuit current density matching between the top and the bottom cells. Generally, the top cell presents the lowest current in the two subcells. In this paper, in order to increase the short-circuit current density in the top cell, we present a theoretical survey of the luminescence downshifting (LDS) approach for the design of monolithic tandem solar cells. The photovoltaic (PV) glass encapsulation material is replaced with a polymer material of polymethyl methacrylate (PMMA) type which is doped with diverse kinds of organic dyes. The performance of the n-p-p

14 citations

Journal ArticleDOI
TL;DR: In this paper, a planar ultra wideband (UWB) monopole antenna with controllable dual-band-notched characteristics is presented, where U-shaped inverted slot and vertical up C-shaped slot are embedded in the feed line and in the radiating patch, respectively.
Abstract: A compact planar ultra-wideband (UWB) monopole antenna with controllable dual-band-notched characteristics is presented in this paper. U-shaped inverted slot and vertical up C-shaped slot are embedded in the feed line and in the radiating patch, for rejecting WiMAX and WLAN frequency bands, respectively. Moreover, the bandwidth of each rejected band can be independently shifted by adjusting the dimensions of the corresponding band-notched structure. The proposed antenna with two rejected bands characteristics is successfully simulated, prototyped, and measured. The measured results show that the proposed antenna operates until upper 10.6 GHz for voltage standing wave ratio (VSWR) less than 2 and exhibits bands rejection of 3.20–4.1 GHz (24.66%) and 5.20–5.96 GHz (13.62%) frequency band. Furthermore, the proposed antenna shows good radiation characteristics, stable peak gain, and provides more than 80% radiation efficiency, on the entire UWB frequency range except in the notched frequency bands, which prospects the employment in the UWB communication systems.

13 citations

Journal ArticleDOI
01 Nov 2017-Optik
TL;DR: In this paper, the authors developed an efficient and practical approach for utilization in buildings of windows and facades for solar energy conversion without impeding vision through glazing, where the glazing is processed with a luminescent coating allowing recovering of the high energy photons from the UV spectrum.

11 citations


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Book
01 Jan 1999
TL;DR: This chapter discusses group-VI Semiconductors, which is a small group of semiconductors found in the electronics industry, and its applications, which are much larger than Group-VI and have a much wider range of applications.
Abstract: Preface. Acknowledgments. Abbreviations and Acronyms. Introductory Remarks. A. Group-VI Semiconductors. B. III-V Binary Semiconductors. C. III-V Alloy Semiconductors. D. II-VI Semiconductors. E. IV-VI Semiconductors. F. Amorphous Semiconductors. Index.

141 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed the use of photovoltaic (PV) technologies to add extra functionalities in a building by replacing the conventional structural material and harnessing benign electricity aesthetically from PV.

133 citations

Journal ArticleDOI
TL;DR: In this paper, a vertical hybrid PVT solar dryer has been developed and analyzed by utilizing numerical and experimental approaches, and the obtained experimental findings showed that thermal efficiency values of the finless and finned vertical PVT collectors were in the ranges of 47.46-54.86% and 50.25-58.16%, respectively.

81 citations

Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the status of BIPV/BAPV system in India and proposed a window system for Indian context to reduce the building's HVAC load.
Abstract: The photovoltaic (PV) system is one of the most promising technologies that generate benevolent electricity. Therefore, fossil fuel-generated electric power plants, that emit an enormous amount of greenhouse gases, can be replaced by the PV power plant. However, due to its lower efficiency than a traditional power plant, and to generate equal amount of power, a large land area is required for the PV power plant. Also, transmission and distribution losses are intricate issues for PV power plants. Therefore, the inclusion of PV into a building is one of the holistic approaches which reduce the necessity for such large land areas. Building-integrated and building attached/applied are the two types where PV can be included in the building. Building applied/attached PV(BAPV) indicates that the PV system is added/attached or applied to a building, whereas, building integrated PV (BIPV) illustrates the concept of replacing the traditional building envelop, such as window, wall, roof by PV. In India, applying PV on a building is growing due to India’s solar mission target for 2022. In 2015, through Jawaharlal Nehru National Solar Mission, India targeted to achieve 100 GW PV power of which 40 GW will be acquired from roof-integrated PV by 2022. By the end of December 2019, India achieved 33.7 GW total installed PV power. Also, green/zero energy/and sustainable buildings are gaining significance in India due to rapid urbanization. However, BIPV system is rarely used in India which is likely due to a lack of government support and public awareness. This work reviewed the status of BIPV/BAPV system in India. The BIPV window system can probably be the suitable BIPV product for Indian context to reduce the building’s HVAC load.

71 citations

Journal ArticleDOI
TL;DR: In this article, solar photovoltaic (PV) systems play an important role for electricity production using solar energy, underdeveloped or developing nations still strive for constant supply of electricity.
Abstract: Solar photovoltaic (PV) systems play an important role for electricity production using solar energy. Underdeveloped or developing nations still strive for constant supply of electricity. When foss...

49 citations