- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Effective Upconverter and Light Scattering Dual Function LiYF <sub/>4</sub> :Er <sup>3+</sup> /Yb <sup>3+</sup> Assisted Photoelectrode for High Performance Cosensitized Dye Sensitized Solar Cells
摘要： Conversion of near-infrared (NIR) light photons into visible light has remarkable advantages in dye sensitized solar cells (DSSCs) for their improved performance. This study uncovers the dual function of LiYF4:Er3+/Yb3+ as upconverter (UC) and light scattering material in DSSCs by its incorporation onto the photoelectrode. The LiYF4:Er3+/Yb3+ powders were prepared using a facile hydrothermal process followed by spin deposition of LiYF4:Er3+/Yb3+ suspensions over photoelectrode. The photoelectrode used for this investigation was further cosensitized with N719 and squaraine SPSQ2 dyes. The dual functions of LiYF4:Er3+/Yb3+ material coupled with dye cosensitization treatment produced record power conversion efficiency (PCE) of 10.53% in the fabricated DSSC. The LiYF4:Er3+/Yb3+ enabled the photoelectrode DSSC to exhibit good short-circuit current density (Jsc) of 22.16 mA/cm2, open-circuit voltage (Voc) of 0.66 V, and fill factor (FF) of 0.72. This work is the debut attempt toward the application of a photoelectrode embedded with dual function and cosensitized materials to utilize lower energetic photons through the upconversion mechanism and improve absorption close to red wavelengths (absorption band 630?700 nm) through the dye cosensitization process.
关键词： DSSC,LiYF4:Er3+/Yb3+,squaraine dye,cosensitization,high performing,dual function upconverter
更新于2025-09-23 15:19:57
-
[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Performance Evaluation of a Fleet of Photovoltaic Systems Across India and Southeast Asia
摘要： The growth of PV systems deployment continues to lead the rapid dissemination of solar photovoltaics as one of the primary sources of renewable electricity generation today across the globe. However, several solar technology entrants in new markets naturally mean that thousands of PV systems are being deployed and not necessarily performing at their highest potentials. The core location of new systems lies in Asia. Little information is also available on system performance across the scientific world and public databases with regards to large datasets of sites. This work aims to break that trend and expose the performance metrics of a considerable pool of distributed Asian PV systems (57 sites, ~42 MWp) based on a fleet of assets deployed in India and six other Southeast Asia countries. Challenges preventing optimal system operation are discussed and could be used as guidelines for higher-quality systems coming online in the years ahead in the region.
关键词： PV system performance,high-performing systems,distributed PV
更新于2025-09-19 17:13:59