Khursheed Ahmad, Mohd Quasim Khan, Ali Alsulmi, Tae Hwan Oh
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引用次数: 0
摘要
我们报告了采用水热法在 180°C 下 7 小时合成掺磷(P)的还原型氧化石墨烯(P-rGO)的情况。此外,我们还利用粉末 X 射线衍射法研究了水热法合成的 P-rGO 的无定形性质和相纯度。扫描电子显微镜证实了 P-rGO 特有的片状表面结构。利用能量色散 X 射线光谱和光电子 X 射线光谱鉴定了 P-rGO 中 P 的存在。合成的 P-rGO 被用作一种低成本、无铂的对电极材料,用于制造染料敏化太阳能电池(DSSC)。此外,还研究了退火温度对利用 P-rGO 构建 DSSC 的影响,结果表明,在 200°C 温度下,功率转换效率最高达 6.3%,光电流密度最高达 15.37 mA/cm2。基于铂对电极的 DSSC 的功率转换效率为 7.4%。基于 P-rGO 对电极的 DSSC 的性能是合理的,可以通过开发新的器件架构进一步提高性能。本研究提出了一种简单、环保且不含铂的对电极,用于构建具有良好性能的 DSSC。
Design and Fabrication of Pt-Free Counter Electrode for Photovoltaic Application
We report the synthesis of phosphorus (P)-doped reduced graphene oxide (P-rGO) using a hydrothermal method at 180°C for 7 h. Furthermore, the amorphous nature and phase purity of the hydrothermally synthesized P-rGO was studied by powder x-ray diffraction. The characteristic sheet-like surface structure of the P-rGO was confirmed by scanning electron microscopy. The presence of P in the P-rGO was authenticated by using energy-dispersive x-ray spectroscopy and photoelectron x-ray spectroscopy. The synthesized P-rGO was employed as a low-cost and Pt-free counter electrode material for the construction of dye-sensitized solar cells (DSSCs). The effect of annealing temperature on the construction of the DSSCs using P-rGO was also studied, and the highest power conversion efficiency of 6.3% and photocurrent density of 15.37 mA/cm2 were obtained at 200°C. The platinum counter electrode-based DSSCs exhibited the power conversion efficiency of 7.4%. The performance of the P-rGO counter electrode-based DSSCs was reasonable and can be further improved by developing novel device architectures. This work proposes the simple, eco-friendly, and Pt-free counter electrode for the construction of DSSCs with a decent performance.
期刊介绍:
The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications.
Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field.
A journal of The Minerals, Metals & Materials Society.