干旱区生态环境知识资源中心(Arid): Thermally Stable Inorganic Perovskite Solar Cells

Arid

	Thermally Stable Inorganic Perovskite Solar Cells
	Gaonkar, Harsh; Zhu, Junhao; Kottokkaran, Ranjith; Noack, Max; Dalal, Vikram
通讯作者	Gaonkar, H (corresponding author), Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA.
会议名称	47th IEEE Photovoltaic Specialists Conference (PVSC)
会议日期	JUN 15-AUG 21, 2020
会议地点	ELECTR NETWORK
英文摘要	We report on the growth and properties of thermally stable, high bandgap perovskite solar cells deposited using a layer-by-layer vacuum deposition growth technique. The material was an alloy of Pb, Cs, Br and I. By using an inorganic cation perovskite we eliminated the thermal instability associated with organic cations such as methyl-amine and formamidine. X-ray measurements reveal that there is no change in the composition even when the material is annealed at 300 degrees C after growth, in marked contrast with the case for a material with organic cations which decompose after anneals at 100 degrees C-125 degrees C. Thermal stability is important when perovskite solar cells are to be deployed in real life desert environments where the ambient temperatures approach 50 degrees C and the cell temperatures approach 100 degrees C. Superstrate devices in n-i-p configuration were prepared using an inorganic n layer (CdS) and an organic p layer (P3HT), and the devices were also thermally stable up to an anneal of 300 degrees C. Adding Br to I significantly improved the stability against moisture, and also makes the material stable at all temperatures between room temperature and 350 degrees C, while increasing the bandgap to 1.87 eV range, which is suitable for making a tandem cell with Si or CIGS. Device efficiencies of similar to 12% were achieved with an excellent uniformity of performance between various devices. Detailed measurements of fundamental properties such as defect densities and Urbach energies of tail states were made and show low mid-gap defect densities in the range of 1015/cm3-eV with a peak at 0.53 eV below the conduction band and Urbach energy in the range of 20 meV.
英文关键词	Perovskite solar cells Inorganic perovskite Layer by layer deposition
来源出版物	2020 47TH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)
ISSN	0160-8371
出版年	2020
页码	167-169
ISBN	978-1-7281-6115-0
出版者	IEEE
类型	Proceedings Paper
语种	英语
收录类别	CPCI-S
WOS记录号	WOS:000653077100042
WOS类目	Energy & Fuels ; Engineering, Electrical & Electronic
WOS研究方向	Energy & Fuels ; Engineering
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353050
作者单位	[Gaonkar, Harsh; Zhu, Junhao; Kottokkaran, Ranjith; Noack, Max; Dalal, Vikram] Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA
推荐引用方式 GB/T 7714	Gaonkar, Harsh,Zhu, Junhao,Kottokkaran, Ranjith,et al. Thermally Stable Inorganic Perovskite Solar Cells[C]:IEEE,2020:167-169.