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Bryan Voigt¹, Lis Stolik Valor², William Moore¹

¹Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States.

ACS applied materials & interfaces

|June 2, 2023

概括

研究人员使用在 (FeS2) 单晶中实现了受控的散装p型兴奋剂. 这一突破使得用于先进的太阳能电池应用的矿p-n同质连接的制造成为可能.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
可再生能源可再生能源是可再生能源.

背景情况:

矿 (FeS2) 显示出低成本,可持续的太阳能电池的前景,但由于性能差以及控制其电气性质的挑战而受到限制.
之前使用矿的太阳能电池设计侧重于异质连接,现在已知由于表面问题而存在问题.
虽然pyrite的n型兴奋剂已经确立,但实现可控的散装p型兴奋剂仍然是一个重大障碍.

研究的目的:

为了证明第一个明确和受控的散装p型兴奋剂在pyrite单晶中.
为了研究 (P) 兴奋剂对矿电传特性的影响.
探索用于光伏应用的化物p-n同质连接的潜力.

主要方法:

使用化学蒸汽运输 (CVT) 和受控兴奋剂培养了单晶矿.
使用Seebeck和Hall效应测量来检测载体类型和度.
进行了详细的温度和P-doping-dependent运输测量,以分析兴奋剂行为和缺陷水平.

主要成果:

在FeS2单晶中实现了受控的散装p型运输,其中 (P) 含量达到至少~100 ppm.
兴奋剂在300K时诱导了大约10^18孔/cm^3,而不会影响晶体质量.
观察到从n型到p型的载体类型反转,并增加P度,由Seebeck和Hall效应证实.
确定P接受器水平在价值带最大值以上为175 ± 10 meV,并证实了散装反转.

结论:

这项研究介绍了首次成功地使用对石进行控制的散装p型兴奋剂.
取得的p型兴奋剂打开了制造矿p-n同联太阳能电池的途径.
这些发现为开发基于岩的高效和可持续的太阳能能源技术提供了新的可能性.

关键词:

同一连接的太阳能电池.在p型兴奋剂中使用p型兴奋剂.太阳能光伏发电是如何实现的皮里特酸盐是什么皮里特酸盐半导体半导体半导体

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