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揭示了聚合值对矿膜结晶行为的影响,用于高效和稳定的太阳能电池

Weijian Tang¹, Yu Chen², Ruisen Shi¹

¹College of Materials Science and Engineering, Sichuan University, 24 First South Section First Ring Road, Chengdu, 610064, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|April 26, 2025

概括

聚乙烯 (PVP) 添加剂,具有优化的聚合控制,矿膜结晶. 这一策略提高了设备的性能,为矿太阳能电池实现了高功率转换效率 (PCE).

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.
固态化学固态化学

背景情况:

高质量的矿膜对于高效的太阳能电池至关重要,需要控制结晶和缺陷密度.
多功能添加剂可以定制矿薄膜形成过程,影响设备性能.
聚合物添加剂有可能通过特定的相互作用来调节矿结晶.

研究的目的:

研究不同程度聚合的聚乙烯 (PVP) 对矿膜质量和设备性能的影响.
了解PVP和矿前体之间的协调相互作用在控制结晶中的作用.
用量身定制的聚合物添加剂来展示提高矿太阳能电池效率的有效策略.

主要方法:

在矿膜沉积过程中对PVP添加剂 (K15,K30,K90) 进行系统选.
分析结晶过程,缺陷密度和薄膜形态,使用像光发光 (PL) 寿命这样的技术.
使用经过处理的薄膜制造的矿太阳能电池 (PSC) 的制造和表征,包括无MA和四倍离子装置.

主要成果:

PVP K30表现出最佳的粘度和结合强度,延迟了中间相位过渡和加速核化.
经K30处理的矿薄膜显示出增强的结晶性,延长了PL寿命,并消除了剩余的PbI2.2.
没有MA的PSC在1.2V的开放电路电压下实现了24.16%的功率转换效率 (PCE).
用K30处理的四度化矿薄膜达到25.35%的PCE,VOC赤字最小为0.35V.

结论:

聚乙烯的聚合度 (DP) 显著影响矿膜结晶和质量.
PVP K30是一种有效的添加剂,可以控制矿晶体的生长,从而提高太阳能电池的性能.
这种方法为开发高效矿太阳能电池提供了一个可行的策略,并强调了添加剂选择的重要性.

关键词:

结晶过程的结晶过程.聚合化的程度.多碳基基基基基基基基基基基基基基基基基基基基基基基基矿太阳能电池是如何使用的聚乙烯罗利胺的一种.

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