diplomsko delo
Blaž Peklaj (Author), Marko Jošt (Mentor)

Abstract

V diplomskem delu smo raziskali vpliv spreminjanja razmerja cezija (Cs) in formamidinija (FA) na energijsko režo FACs perovskitnih sončnih celic ter kako te spremembe vplivajo na njihove optične ter električne lastnosti. Zmožnost prilagajanja energijske reže pomeni, da je perovskite mogoče prilagoditi za različne aplikacije, kot so različne vrste fotovoltaičnih celic ali svetlečih diod. Izdelali smo 4 kompozicije celic z različnimi deleži Cs in FA. Za vsako kompozicijo smo izdelali 48 celic (8 substratov). Pomerili smo I-U karakteristike celic in izračunali osnovne parametre, kot so napetost odprtih sponk (Voc), gostota toka kratkega stika (Jsc), faktor polnjenja (FF) in učinkovitost pretvorbe moči (PCE). Najboljše celice so dosegle izkoristek nad 19 % in faktor polnjenja nad 75 %. Iz meritev zunanjega kvantnega izkoristka (EQE), fotoluminiscence (PL) in transmisije (T) smo ugotovili, da se z višanjem deleža Cs viša tudi energijska reža perovskita. Za konec smo opravili še sledenje v točki največje moči (MPPT), kjer so vse kompozicije pokazale dobro stabilnost brez degradacije v obdobju 50 minut.

Keywords

sončne celice;energijska reža;perovskit;univerzitetni študij;Elektrotehnika;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FE - Faculty of Electrical Engineering
Publisher: [B. Peklaj]
UDC: 621.383.51(043.2)
COBISS: 163869443 Link will open in a new window
Views: 31
Downloads: 5
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Other data

Secondary language: English
Secondary title: Bandgap tuning of perovskite FACs solar cells
Secondary abstract: In the thesis, we explored the impact of varying the ratio of cesium (Cs) and formamidinium (FA) on the bandgap of FACs perovskite solar cells, and how these changes affect their optical and electrical properties. The ability to tune the bandgap means that perovskites can be adjusted for various applications, such as different types of photovoltaic cells or light-emitting diodes. We fabricated perovskite solar cells with 4 compositions with varying proportions of Cs and FA. For each composition, we created 48 cells (8 substrates). We measured the I-V characteristics of the cells and calculated basic parameters such as open-circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), and power conversion efficiency (PCE). The best cells achieved an efficiency of over 19% and a fill factor of over 75%. From measurements of external quantum efficiency (EQE), photoluminescence (PL), and transmission (T), we found that as the proportion of Cs increases, so does the bandgap of the perovskite. Finally, we conducted maximum power point tracking (MPPT), where all the cells showed good stability without degradation during 50 minutes of tracking.
Secondary keywords: solar cell;bandgap;perovskite;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000313
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za elektrotehniko
Pages: XX, 37 str.
ID: 19912988