相关实验视频
Updated: Jan 29, 2026

05:15
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
8.6K
通过界面介电屏蔽扩展载体扩散,用于运行稳定的矿/TOPCon并列太阳能电池
Wenfeng Liu1,2, Zhiqin Ying1, Huan Li1
1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (CAS), Ningbo, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 28, 2026
概括
一种新型的氧化物 (NbOX) 电子选择性接触显著提高了矿/二联太阳能电池的长期运行稳定性. 这一突破改善了载体扩散,提高了效率和设备寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 半导体物理 半导体物理
背景情况:
- 矿/双联太阳能电池的效率超过了单节限,但存在运行稳定性问题.
- 矿/C60接口在体中限制了载体扩散长度,加剧了载体积累和重组.
- 配对的纹理需要厚厚的矿层,进一步复杂化载体动态.
研究的目的:
- 为了引入高介电常数的氧化物 (NbOX) 电子选择性接触,用于矿/二联太阳能电池.
- 为了解决载体扩散长度的限制,并提高这些设备的操作稳定性.
- 研究NbOX对界面缺陷被动化和能量水平对齐的影响.
主要方法:
- 使用NbOX电子选择接触制造单节矿太阳能电池和单质矿/TOPCon双联太阳能电池.
- 设备性能的表征,包括功率转换效率 (PCE) 和在最大功率点 (MPP) 追踪下长期运行稳定性.
- 对界面性质的分析,包括通过Pb-O键形成抑制缺陷和化学被动化.
主要成果:
- 在MPP追踪650小时后,单节矿太阳能电池实现了22.4%的PCE,效率保持91%.
- 单立体矿/TOPCon双联太阳能电池达到32.0%的认证PCE,并在200小时的MPP跟踪后保持完整的初始性能.
- NbOX接触有效地抑制了缺陷介导的载体捕获和被动化接口缺陷,延长了载体扩散长度.
结论:
- 高介电性NbOX电子选择性接触对于提高矿/联太阳能电池的功率转换效率和长期运行稳定性至关重要.
- 通过界面工程优化载体扩散长度对于克服载体积累和重组挑战至关重要.
- 这项工作表明了开发高效和耐用的矿光伏设备的有希望的战略.
相关概念视频
Electron Carriers
91.7K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
91.7K
Diffusion
217.9K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
217.9K
Diffusion
6.4K
Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
6.4K
Capacitor With A Dielectric
4.9K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.9K
Gauss's Law in Dielectrics
5.1K
Consider a polar dielectric placed in an external field. In such a dielectric, opposite charges on adjacent dipoles neutralize each other, such that the net charge within the dielectric is zero. When a polar dielectric is inserted in between the capacitor plates, an electric field is generated due to the presence of net charges near the edge of the dielectric and the metal plates interface. Since the external electrical field merely aligns the dipoles, the dielectric as a whole is neutral. An...
5.1K
Carrier Transport
941
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
941

