通过对阳离子和阴离子的协同工程来抑制离子迁移,以实现高性能倒置矿太阳能电池和模块
Zuolin Zhang1, Mengjia Li1, Ru Li2
1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, China.
Advanced materials (Deerfield Beach, Fla.)
|March 26, 2024
概括
甲基三乙酸盐 (DMATFA) 通过防止离子迁移和提高设备性能来稳定矿太阳能电池. 这一突破提高了商业应用的运营稳定性和效率.
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.
- 太阳能光伏发电是如何实现的
背景情况:
- 矿太阳能电池面临离子迁移和大面积制造的挑战,阻碍了商业化.
- 内在的不稳定性和降解途径限制了矿光伏的长期性能.
研究的目的:
- 通过解决离子迁移和接口不稳定性,制定矿太阳能电池和模块的稳定战略.
- 调查有机盐分子在控制性缺陷和提高设备稳定性方面的作用.
主要方法:
- 选有机盐分子,识别二甲基三乙酸盐 (DMATFA) 用于矿表面操纵.
- 使用二甲基 (DMA+) 将多余的PbI2转化为稳定的DMAPbI3和三乙酸 (TFA-),使缺陷无源化并抑制离子迁移.
- 使用真空闪光蒸发技术与DMATFA处理制造反转矿太阳能电池和模块.
主要成果:
- DMATFA处理有效地抑制了离子迁移,并稳定了异质连接接口和银电极.
- 在小面积电池中实现了创纪录的功率转换效率25.03% (获得了24.65%的认证),在大面积模块 (63.74厘米2) 中达到20.58%.
- 经过1520小时的连续运行后,保持了91%的初始效率,证明了卓越的操作稳定性.
结论:
- DMATFA是一种高效的材料,可以稳定矿太阳能电池,防止离子迁移和降解.
- 开发的战略显著提高了矿光伏的商业可行性,特别是那些通过真空闪光蒸发制造的光伏.
- 创纪录的效率和增强的稳定性为下一代太阳能技术铺平了道路.
相关概念视频
01:17Ion Exchange
591
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
591
01:11P-N junction
525
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
525
03:45Formation of Complex Ions
23.6K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.6K
01:27Biasing of Metal-Semiconductor Junctions
254
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
254
01:09Ion-Exchange Chromatography
463
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
463