MXene-CoS/SnO2 nanocomposite as electron transfer layer in high efficiency perovskite solar cell

With the growing demand for clean and renewable energy resources, there was a significant attempt to explore innovative materials for the development of efficient solar cells. Since being first published in 2018, the use of two-dimensional MXene materials in photovoltaics has attracted significant interest. Among all photovoltaic technologies, perovskite solar cells have garnered considerable attention owing to their potential to be affordable, lightweight, easy to manufacture, and quick to charge. Therefore, the power conversion efficiency of perovskite solar cells (PSCs) rapidly increased over the past few years, drawing the attention of more researchers. The MXene family of materials among 2D nanomaterials has shown considerable promise in enhancing solar cell performance because of their remarkable surface-enhanced characteristics. This study offers novel insights into customizing MXene's performance in various nanocomposites by carefully controlling the composition of the two-dimensional transition metal MXene phase. It presents, for the first time, the synthesis of an efficient hybrid electrocatalyst in the form of a nanocomposite (MXene/CoS)-SnO2 designed to function as a high￾performance electron transfer layer (ETL). The study can be divided into three distinct parts. The first part involves the synthesis of single-layer Ti3C2Tx MXene nanosheets, followed by the preparation of a CoS solution. Subsequently, in the second part, the fabrication of MXene/CoS heterostructure nanocomposites is carried out, and a comprehensive characterization is conducted to evaluate the physical, structural, and optical properties. In the third part, the focus is on the crucial characterizations of the novel nanocomposite-electron transport layer (ETL) solution, significantly contributing to the advancement of perovskite solar cells. These characterizations are vital in enhancing sustainable light-harvesting capabilities within this technology. Upon optimizing the composition, an outstanding power conversion efficiency of more than 17.69% is attained from 13.81% of the control devices with fill factor (FF), open-circuit voltage (Voc), and short-circuit current density (Jsc) were 1.282 V, 66.51%, and 20.74 mA/cm2. Therefore, this PCE is 21.93% higher than the control device. The groundbreaking MXene/CoS (2 mg mL-1) strategy reported in this research represents a promising and innovative avenue for the realization of high-performance perovskite solar cells (PSCs). As a result, the hybrid nanocomposite has demonstrated great potential as a robust catalyst, significantly improving the performance of solar cell layers in photovoltaic applications. Furthermore, the fabrication of perovskite solar cells (PSCs) in ambient environments or high relative humidity (RH) conditions offers a promising avenue for streamlining the fabrication process, making it a highly attractive prospect for practical implementation in the photovoltaic industry. Therefore, this research is required to discover cost-effective ways to enhance solar cell power conversion efficiency while upholding high-quality standards.

Text FK 2023 23 - Full Text.pdf Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (10MB) Text FK 2023 23 - Declaration Form.pdf Restricted to Repository staff only Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (1MB) Text FK 2023 23.pdf Restricted to Repository staff only Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (10MB) Official URL or Download Paper: http://ethesis.upm.edu.my/id/eprint/18939

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