气候变化领域集成服务门户(CCPortal): Challenges and opportunities for an efficiency boost of next generation Cu(In,Ga)Se2solar cells: Prospects for a paradigm shift

CCPortal

DOI	10.1039/d0ee00834f
	Challenges and opportunities for an efficiency boost of next generation Cu(In,Ga)Se2solar cells: Prospects for a paradigm shift
	Ochoa M.; Buecheler S.; Tiwari A.N.; Carron R.
发表日期	2020
ISSN	17545692
起始页码	2047
结束页码	2055
卷号	13 期号:7
英文摘要	Cu(In,Ga)Se2 photovoltaic technology has notably progressed over the past years. Power conversion efficiencies above 23% were reached in spite of the polycrystalline nature of the absorber. Although efficiencies are still far from the practical limits, the material quality is approaching that of III-V compounds that yield the most efficient solar cells. The high carrier lifetime, low open circuit voltage deficit and external radiative efficiency in the single-digit percentage range suggest that the next efficiency boost may arise from the implementation of alternative device architectures. In this perspective paper, we describe the current challenges and pathways to enhance the power conversion efficiency of Cu(In,Ga)Se2 solar cells. Specifically, we suggest the use of non-graded absorbers, integration of charge selective contacts and maximization of photon recycling. We examine these concepts by a semi-empirical device modelling approach, and show that these strategies can lead to efficiencies of 29% under the AM1.5 global spectrum. An analysis of whether or not current state-of-the-art Cu(In,Ga)Se2 solar cells already benefit from photon recycling is also presented. © 2020 The Royal Society of Chemistry.
英文关键词	Conversion efficiency; Efficiency; Open circuit voltage; Photons; Recycling; Charge selective; Device architectures; Device modelling; Photon recycling; Photovoltaic technology; Power conversion efficiencies; Radiative efficiency; State of the art; Solar cells; concentration (composition); copper; electrochemistry; energy efficiency; fuel cell; gallium; performance assessment
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189618
作者单位	Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, Duebendorf, CH-8600, Switzerland
推荐引用方式 GB/T 7714	Ochoa M.,Buecheler S.,Tiwari A.N.,et al. Challenges and opportunities for an efficiency boost of next generation Cu(In,Ga)Se2solar cells: Prospects for a paradigm shift[J],2020,13(7).
APA	Ochoa M.,Buecheler S.,Tiwari A.N.,&Carron R..(2020).Challenges and opportunities for an efficiency boost of next generation Cu(In,Ga)Se2solar cells: Prospects for a paradigm shift.Energy & Environmental Science,13(7).
MLA	Ochoa M.,et al."Challenges and opportunities for an efficiency boost of next generation Cu(In,Ga)Se2solar cells: Prospects for a paradigm shift".Energy & Environmental Science 13.7(2020).