diplomsko delo
Urban Drlink (Author), Marko Jošt (Mentor)

Abstract

Vedno večje potrebe po električni energiji, onesnažujejo naše okolje, zato jo je smiselno pridobiti iz obnovljivih virov. Odlična tehnologija so perovskitne sončne celice, ki izkoriščajo sončno energijo, vendar še niso dovolj dovršene za komercialno uporabo. V diplomski nalogi smo raziskali vpliv povišanih temperatur na spremembo delovanja in lastnosti perovskitnih sončnih celic, saj so povišane temperature ena glavnih problematik pri delovanju pod zunanjimi pogoji. Diplomske naloge smo se lotili v laboratoriju LPVO z izdelavo perovskitnih sončnih celic. Substrate smo najprej očistiti in zatem nanesli plasti. Izdelali smo 9 serij, skupaj 64 substratov s 6 celicami na vsakem. Podrobneje smo analizirali 13 substratov iz različnih serij. Analizirali smo vpliv povišanih temperatur na J-V krivulje, zunanji kvantni izkoristek ter stabilnost. Izračunali smo temperaturne koeficiente ter celice primerjali med seboj. Iz rezultatov opazimo, da povišane temperature negativno vplivajo na perovskitne sončne celice. Zaradi segrevanja se širi energijska reža, kar zmanjšuje njihovo učinkovitost. Dodatno pripomorejo še izgube toplote znotraj celice in z okolico (večje pri višjih temperaturah) ter poviševanje entropije, s čimer se izhodna energija nosilcev naboja zmanjša, zato pade Voc . Že krajša izpostavljenost povišanim temperaturam privede do degradacije, ki pa je še bolj očitna v daljših časovnih obdobjih. Upoštevati moramo tudi človeški faktor napak pri izdelavi, ki pa se bo v prihodnosti izboljšal s strojno izdelavo.

Keywords

sončne celice;perovskit;povišana temperatura;univerzitetni študij;Elektrotehnika;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FE - Faculty of Electrical Engineering
Publisher: [U. Drlink]
UDC: 621.383.51(043.2)(0.034.2)
COBISS: 199498755 Link will open in a new window
Views: 83
Downloads: 24
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Behavior of perovskite solar cells at elevated temperatures
Secondary abstract: The increasing demand for electrical energy is polluting our environment, making it reasonables to source energy from renewable resources. An excellent technology in this regard are perovskite solar cells, which harness solar energy. However, they are not yet sufficiently advanced for commercial use. In this thesis, we investigated the impact of elevated temperatures on the performance and properties of perovskite solar cells, as operation under elevated temperatures is one of the main challenges. We conducted the thesis research in the LPVO laboratory by fabricating perovskite solar cells. We first cleaned the substrates and then applied the layers. We produced 9 batches, totaling 64 substrates with 6 cells on each. We analyzed 13 substrates from different batches in detail. We examined the effects of elevated temperatures on the J-V curves, external quantum efficiency and stability. We calculated the temperature coefficients and compared the cells with each other. Results indicate that elevated temperatures negatively affect perovskite solar cells. Heating widens the energy gap, reducing their efficiency. Additional contributing factors include heat losses within the cell and with the surroundings (greater at higher temperatures) and increased entropy, which reduces the output energy of charge carriers, causing a drop in Voc. Even short-term exposure to high temperatures leads to degradation, which is even more pronounced over longer periods. We must also consider human error in fabrication, which will improve with machine manufacturing in the future.
Secondary keywords: solar cell;perovskite;elevated temperature;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000313
Thesis comment: Univ. v Ljubljani, Fak. za elektrotehniko
Pages: 1 spletni vir (1 datoteka PDF (XX, 41 str.))
ID: 24373241