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具有混合后接触的太阳能电池

Genshun Wang^1,2, Mingzhe Yu¹, Hua Wu¹

¹Central R&D Institute, LONGi Green Energy Technology Co. Ltd, Xi'an, China.

|November 12, 2025

概括

研究人员开发了一种混合太阳能电池,效率达到27.81%和填充率达到87.55%. 这一突破将重组损失降至最低, 推进可扩展的高效太阳能技术.

科学领域:

材料科学
可再生能源工程
半导体物理

背景情况:

太阳能电池对于可持续能源至关重要,但面临效率限制,尤其是充电率.
光伏的填充因子损失是实现更高功率转换效率的重要障碍.

研究的目的:

开发一种混合式的反接触式太阳能电池, 提高效率和充电率.
研究和减轻太阳能电池中的载体重组损失.
提供关于填充因子限制和载体损失机制的理论见解.

主要方法:

混合数字化反接触太阳能电池架构的开发.
集成先进的全表面消极化技术.
使用激光处理的道接触.
高温和低温加工步骤的组合.
模拟理想性因子以分析载体损失机制.

主要成果:

实现了27.81%的功率转换效率,达到理论极限的95%.
获得了87.55%的填充系数,相当于理论极限的98%.
通过综合处理成功抑制了重组.
通过激光处理的道接触提高了接触性能.
使用理论模型归因于重组的阐明关键填充因子损失.

结论:

开发的混合太阳能电池设计为可扩展,高效的光伏提供了显著的进步.
这项研究提供了对填充因子优化的实验验证和理论理解.
这项工作为下一代太阳能电池铺平了道路,

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P-N junction

P-N junction

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...