000161820 001__ 161820 000161820 005__ 20250630115444.0 000161820 037__ $$aTESIS-2025-197 000161820 041__ $$aeng 000161820 1001_ $$aDiaw Ndiaye, Fatou 000161820 24500 $$aCeldas solares duraderas y eficientes combinando perovskita y nanocristales 000161820 260__ $$aZaragoza$$bUniversidad de Zaragoza, Prensas de la Universidad$$c2025 000161820 300__ $$a263 000161820 4900_ $$aTesis de la Universidad de Zaragoza$$v2025-196$$x2254-7606 000161820 500__ $$aPresentado: 29 04 2025 000161820 502__ $$aTesis-Univ. Zaragoza, , 2025$$bZaragoza, Universidad de Zaragoza$$c2025 000161820 506__ $$aby-nc$$bCreative Commons$$c3.0$$uhttp://creativecommons.org/licenses/by-nc/3.0/es 000161820 520__ $$aEmerging photovoltaic (PV) technologies are being developed to improve the performance and the stability of solar cells. This thesis focused on the development of scalable and stable solar cells by assembling heterojunction devices. These devices combined perovskites (PK) with quantum dots (QDs) or bismuth-based nanocrystals (NCs). First, single junction solar cells with PK as active layers were fabricated and characterized under ambient conditions (no glove box) to offer a low cost and stable solution with high potential for large scale production. Two types of PV devices (spin coated and drop casted) were prepared using two modified MAPbI3 perovskite formulations (MAPbIxCl1-x and MA1-x(AVA)xPbI3) across planar (C-PSC) and mesoporous (M-PSC) configurations. The resulting maximum power conversion efficiencies (PCE) of <br />the devices were 10.7% and 12.9% for drop casted and spin coated cells, respectively. <br />Afterwards, the research continued with the synthesis and characterization of Bi2S3 NCs and their introduction into PV devices in combination with perovskite. However, the results were not the optimal, as the performance was not improved. <br />On a different approach, CsPbBr3 QDs were synthesized by ligand-assisted room temperature processing and compared with commercial QDs produced with the traditional hot-injection method. The two materials had similar optical properties, but differed in their morphology and chemical environment. Different PV devices were fabricated via drop casting using various integration strategies, mixing QDs within the PK <br />(MA1-x(AVA)xPbI3) layer, bilayer heterojunction or applying them on the outer glass surface. The performance obtained by coupling QDs (Q-PSC) with PK was better than PK alone (PSC), from 9.3% for control samples to 10.4% for samples with QDs, with an absolute PCE increase of 11.8%. Dedicated characterizations techniques were used for the analysis of layer modifications due to degradation. <br />To further investigate the stability of these heterojunction devices, aging campaigns at damp heating (85°C/85% RH) conditions and light soaking (1 SUN) exposure were conducted. The study provided in-depth insights into degradation pathways and explored <br />how QDs influence stability and long-term performance.<br /> 000161820 520__ $$a<br /> 000161820 521__ $$97103$$aPrograma de Doctorado en Ingeniería Química y del Medio Ambiente 000161820 540__ $$9info:eu-repo/semantics/embargoedAccess 000161820 6531_ $$aenergía solar 000161820 6531_ $$atecnología de materiales 000161820 6531_ $$adispositivos fotoeléctricos 000161820 691__ $$a7 13 000161820 692__ $$aAsegurar el acceso a energías asequibles, fiables, sostenibles y modernas para todos. Tomar medidas urgentes para combatir el cambio climático y sus efectos. 000161820 700__ $$aLionel, Flandin $$edir. 000161820 700__ $$aBernechea Navarro, María $$edir. 000161820 7102_ $$aUniversidad de Zaragoza$$b 000161820 830__ $$9515 000161820 8560_ $$fcdeurop@unizar.es 000161820 8564_ $$s37222490$$uhttps://zaguan.unizar.es/record/161820/files/TESIS-2025-197.pdf$$zinfo:eu-repo/date/embargoEnd/2027-04-29 000161820 909CO $$ooai:zaguan.unizar.es:161820$$pdriver 000161820 909co $$ptesis 000161820 9102_ $$aIngeniería y Arquitectura$$b 000161820 980__ $$aTESIS