Browsing by Author "Kemerchou, Imad"

Now showing 1 - 4 of 4

Effect of using sponge pieces in a solar still
(جامعة الوادي - university of el oued, 2022-07-22) Bellila, Abdelkader; Kemerchou, Imad; Sadoun, Ali; Driss, Zied
Solar distillation is a very effective way to obtain pure water, especially in isolated areas where the water is infected or polluted to obtain drinking water. Two conventional solar stills of the same size (0.5 x 0.5 m) were tested for 8 hours. One still is priced as an SSR reference still and the other still which contains pieces of sponge is SSM and that is the subject of our work. The results show that the use of sponge in winter improves the yield of 10 %.
Enhancing of CH3NH3SnI3 based solar cell efficiency by ETL engineering
(جامعة الوادي - university of el oued, 2020-06-12) Hima, Abdelkader; Khechekhouche, ,Abderrahmane; Kemerchou, Imad
Solar cells based on organic-inorganic perovskites (PVK) are the subject of several researches in laboratories around the world. One of the most promising hybrid perovskite is the methylammonium lead tri-iodide MAPbI3 that is suitable for sun light harvesting. But the MAPbI3 is a toxic material, so in this paper is proposed another nature friendly candidate which is the methylammonium tin tri-iodide MASnI3. The proposed material is inserted into an n-i-p heterojunction solar cell which structure is electron transport layer (ETL)/PVK/hole transport layer (HTL). The used HTL is the PEDOT: PSS in combination with one of two ETLs which are the PCBM and the IGZO. Simulation efforts using 1D SCAPS was carried. It is found that IGZO ETL based solar cell yields a higher power conversion efficiency (PCE) compared with PCBM ETL based solar cell in the same thickness
Extraction of the electrical parameters of the Au/InSb/InP Schottky diode in the temperature range (300 K- 425 K)
(جامعة الوادي - university of el oued, 2020-06-20) Sadoun, Ali; Kemerchou, Imad
In this work, we have presented a theoretical study of Au/InSb/InP Schottky diode based on current-voltage (I-V) measurement in the temperature range ( 300 K- 425 K). Electrical parameters of Au/InSb/InP such as barrier height (Φb), ideality factor and series resistance have been calculated by employing the conventional (I-V), Norde, Cheung and Chattopadhyay methods. Measurements show that the Schottky barrier height (SBH), ideality factor and series resistance, RS for Au/InSb/InP Schottky diode in the temperature range (300 K–425 K) are 0.602-0.69eV, 1.683-1.234 and 84.54-18.95 (Ω), respectively. These parameters were extracted using Atlas- Silvaco-Tcad logical
An optimized perovskite solar cell designs for high conversion efficiency
(Superlattices and Microstructures, 2019-05) Hima, Abdelkader; Lakhdar, Nacereddine; Benhaoua, Boubaker; Saadoune, Achour; Kemerchou, Imad; Rogti, Fatiha
This paper reports the simulation and optimization of an organic/inorganic perovskite-based photovoltaic solar cell. Several structures for PSC are found in literature in order to enhance the conversion efficiency. The objectif of this work is to study and investigate different structures of solar cells based on perovskite materials to improve their performances. The simulated solar cell is made by sandwiching TiO2/Perovskite/spiro-OMeTAD layers where TiO2 is the electron transport layer (ETL), spiro-OMeTAD is the hole transport layer (HTL) and both CH3NH3PbI3 CH3NH3SnI3 are the perovskite (PVK) absorber layers. Therefore, the layer thicknesses of different materials are modified in order to find the better conversion efficiency of solar cells. The obtained results show that layer thicknesses that provide the maximum power conversion efficiency of 18.16% and 9.56% for both perovskite materials CH3NH3PbI3 and CH3NH3SnI3, respectively are 200 nm, 100 nm and 500 nm for spiro-OMeTAD, TiO2 and PVK materials, respectively. The numerical simulation was performed using the ATLAS device simulation software.