Room Temperature Synthesis, Mechanism and Stability Analysis of CH3NH3PbI3 and the Development of Transition metal (I) cation based New Inorganic Perovskites
| Autor: | Taame Abraha Berhe |
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| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 The existing issues in this area of organometallic halide perovskite solar cells (Omh-PSC) were first reviewed in this work. Omh-PSCs have evolved in an exponential manner in the two key areas of efficiency and stability. The power conversion efficiency (PCE) reached 23.6% in late 2016. The key disquiet was stability, which has been limiting practical applications, but now is in a promising state of the art, measured in thousands of hours. These improvements have been achieved with the application of different materials, interfaces and device architecture optimizations, especially after the investigation of hole conductor free mesoporous device, incorporating carbon electrodes, which promise stable, low cost and easy device fabrication methods. However, this work is still far from complete. A comprehensive understanding of these issues is required to achieve stability breakthroughs and practical outdoor applications for Omh-PSCs. The causes of failure and associated mechanisms of device degradation followed by the origins of degradation, approaches to improve stability, and methods and protocols are discussed in detail. Therefore, this work helps us conduct the following work on (1) material facile and scalable synthesis methods and characterization of its structure-property relationships; (2) understanding of the PL lifetime as a function of photoexcited state dynamics using laser light irradiation and thermal treatment as controlling parameters for the study. And (3) development of new perovskites material using computational methods and suggesting some promising fully inorganic perovskites materials with metal(I) cation replacing methylammonium cation. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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