| Titre : | Study of the substitution possibility of Pb by Sn in perovskite solar cell |
| Auteurs : | DJEFFAL ANOUAR, Auteur ; Afak Meftah., Directeur de thèse |
| Type de document : | Monographie imprimée |
| Editeur : | Biskra [Algérie] : Faculté des Sciences Exactes et des Sciences de la Nature et de la Vie, Université Mohamed Khider, 2022 |
| Format : | 1 vol. (65 p.) |
| Langues: | Français |
| Mots-clés: | perovskite, solar cells, Pb1-x-Snx, Silvaco-Atlas. |
| Résumé : |
The development and commercialization of perovskite solar cells (PSCs) is delayed by the toxicity of lead present in the perovskite, which is the solar light absorber material. To counter this problem, lead (Pb) can be partially replaced by diverse elements and among them we have chosen to study the tin (Sn). The study is based on numerical simulation by Silvaco-Atlas, which is a powerful software for 2D, and 3D electronic device’s modelling. The simulated results are also compared with available measurement to certify the study. The studied PSC at the fist is FTO/TiO2/MAPbI/ spiro-OMeTAD (n-i-p) that gave electrical outputs similar to experimental range; . After that and since the organic HTM (spiro-OMeTAD), according to many works, suffered from instability, we have replaced it by the inorganic HTM CuScN and as results a slight further improvement was occurred in . Next we have concentrated on the main goal of the work with is replacing partially Pb by Sn by considering the MAPbCl3 perovskite which has band gap of 2.92 eV. With 80% of Sn and 20% of Pb the band gap is reduced to 2.19 eV and the solar cell gave good electrical outputs similar to experimental data; .
The band gap reduction that occurs with the partial replacement of Pb with Sn is used in the design of a Tandem solar cell where the perovskite material of the top cell is MAPb0.2Sn0.8Cl3 (2.19 eV) while that of the bottom one is MAPb0.5Sn0.5I3 (1.18 eV). By considering the ideal performance of the cell a very interesting |
| Sommaire : |
Table of contents……...i
Dedication…………….iv Acknowledgmen..v Abstract……………vi List of figures …………….vii List of tables……………………..x List of abbreviations…………xi Introduction………...2 Chapter І : Perovskite materials for solar cells І.1 History of perovskite materials………..…..5 І.2 Perovskite crystal structure……………....7 І.3 Electronic structure of perovskite……………12 І.4 Deposition methods of perovskite films…………….14 І.4.1 Scalable deposition techniques………………………15 І.4.2 Single step, Two-steps deposition…………………………..….16 І.4.3 Thermal vapour deposition………………...17 Chapter II : Design of perovskite solar cell devices II.1 Working principal of a perovskite solar cell…..19 II.2 Electrical outputs of a perovskite solar cell………...20 II.2.1 Short circuit current (ISC)…...........20 II.2.2 Open circuit voltage (VOC)……...21 II.2.3 Fill factor (FF)………………..21 II.2.4 Photo-conversion efficiency (PCE)………….22 II.3 Evolution of the device architect......22 ii II.3.1 Liquid electrolyte DSSCs………23 II.3.2 Solide mesoscopic structure…………………26 II.3.3 Meso-super-structured structure……….27 II.3.4 The reguler structure.....….…28 II.3.5 Planar n-i-p hetero-junction structure…………….30 II.3.6 Inverted planar p-i-n hetrojunction structure……….32 II.4 Advanced device engineering techniques…..…………….33 II.4.1 Contact materials engineering………….………………34 II.4.2 Band-gap engineering of perovskite………………35 II.4.3 Sn-Pb-based Lead-Less PSCs…………37 Chapter III : Study of MAPbSn(Cl/I) perovskite solar cell by Silvaco-Atlas III.1 Introduction……………….40 III.2 Importance of modeling………………40 III.3 Silvaco-Atlas…………….41 III.3.1 Mesh……………………………42 III.3.2 Region……………………………43 III.3.3 Contacts…………………....44 III.3.4 Doping……………………….44 III.3.5 Material…………………….45 III.3.6 Models……………………………45 III.3.7 Light Beam……………………………45 III.3.8 Solution Method………………………….46 III.3.9 Solution Specification……………………………..46 III.3.10 Data Extraction and Plotting………………………….47 III.4 Results and discussions……………………….48 III.4.1 The use of CuScN as HTM……………………….51 iii III.4.2 Effect of replacing a fraction of Pb by Sn………….53 III.4.3 Comparison with expermental data………56 III.5 Optimization…………………….58 III.6 Conclusion………………………….61 Final Conclusion………………………….64 References………………………65 Abstract |
Disponibilité (1)
| Cote | Support | Localisation | Statut |
|---|---|---|---|
| MPHY/597 | Mémoire master | bibliothèque sciences exactes | Empruntable |
