Journal ArticleDOI
Improving the Morphology Stability of Spiro-OMeTAD Films for Enhanced Thermal Stability of Perovskite Solar Cells.
Wenya Song,Wenya Song,Lucija Rakocevic,Lucija Rakocevic,Raghavendran Thiruvallur Eachambadi,Weiming Qiu,João P. Bastos,Robert Gehlhaar,Yinghuan Kuang,Afshin Hadipour,Tom Aernouts,Jef Poortmans,Jef Poortmans +12 more
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TLDR
In this article, the authors proposed facile strategies that successfully stabilize the amorphous phase of spiro-OMeTAD film and showed that the thermal stability of n-i-p perovskite solar cells is largely improved.Abstract:
To guarantee a long lifetime of perovskite-based photovoltaics, the selected materials need to survive relatively high-temperature stress during the solar cell operation. Highly efficient n-i-p perovskite solar cells (PSCs) often degrade at high operational temperatures due to morphological instability of the hole transport material 2,2',7,7'-tetrakis (N,N-di-p-methoxyphenyl-amine)9,9'-spirobifluorene (Spiro-OMeTAD). We discovered that the detrimental large-domain spiro-OMeTAD crystallization is caused by the simultaneous presence of tert-butylpyridine (tBP) additive and gold (Au) as a capping layer. Based on this discovery and our understanding, we demonstrated facile strategies that successfully stabilize the amorphous phase of spiro-OMeTAD film. As a result, the thermal stability of n-i-p PSCs is largely improved. After the spiro-OMeTAD films in the PSCs were stressed for 1032 h at 85 °C in the dark in nitrogen environment, reference PSCs retained only 22% of their initial average power conversion efficiency (PCE), while the best target PSCs retained 85% relative average PCE. Our work suggests facile ways to realize efficient and thermally stable spiro-OMeTAD containing n-i-p PSCs.read more
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Progress and challenges on scaling up of perovskite solar cell technology
TL;DR: In this paper , developments and challenges related to scaling up of perovskite single and tandem PSCs are discussed, touching the aspects of scalable deposition methods, technical challenges, costs, and large area perovskiite single-and tandem devices.
Journal ArticleDOI
Degradation pathways in perovskite solar cells and how to meet international standards
TL;DR: In this article , the main degradation mechanisms of perovskite solar cells and key results for achieving sufficient stability to meet IEC standards are summarized and limitations for evaluating solar cell stability and commercialization potential under the current IEC standard.
Journal ArticleDOI
Analytical Review of Spiro‐OMeTAD Hole Transport Materials: Paths Toward Stable and Efficient Perovskite Solar Cells
TL;DR: In this article , the concept of spirolinkage for synthesis of spiro-based hole transport material (HTM) is discussed, followed by an overview of the desirable optical and electrical properties of SPIRO•OMeTAD.
Journal ArticleDOI
Unveiling the Critical Role of Oxidants and Additives in Doped Spiro-OMeTAD toward Stable and Efficient Perovskite Solar Cells
Guojie Zhu,Lei Yang,Cuiping Zhang,Guozheng Du,Naiyuan Fan,Zhide Luo,Xiaoli Zhang,Jinbao Zhang +7 more
Journal ArticleDOI
In Silico Investigation of the Impact of Hole-Transport Layers on the Performance of CH3NH3SnI3 Perovskite Photovoltaic Cells
TL;DR: In this article , the authors evaluated the influence of bulk defects within light-absorbing CH3NH3SnI3 layers and proposed an optimal device architecture for the given absorber layer using the readily available Cu2O hole-transporting material.
References
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Journal ArticleDOI
Surface passivation of perovskite film for efficient solar cells
Qi Jiang,Yang Zhao,Xingwang Zhang,Xiaolei Yang,Yong Chen,Zema Chu,Qiufeng Ye,Li Xingxing,Zhigang Yin,Jingbi You +9 more
TL;DR: In this paper, an organic halide salt phenethylammonium iodide (PEAI) was used on HC(NH2)2-CH3NH3 mixed perovskite films for surface defect passivation.
Journal ArticleDOI
Modelling polycrystalline semiconductor solar cells
TL;DR: In this paper, an overview is given of various electronic effects present in polycrystalline thin film solar cells, which do not occur in standard crystalline Si solar cells and how these effects are treated numerically in a numerical solar cell simulation tool, SCAPS.
Journal ArticleDOI
Methylammonium Chloride Induces Intermediate Phase Stabilization for Efficient Perovskite Solar Cells
Minjin Kim,Minjin Kim,Gi-Hwan Kim,Tae Kyung Lee,In Woo Choi,Hye Won Choi,Yimhyun Jo,Yung Jin Yoon,Jae Won Kim,Jiyun Lee,Daihong Huh,Heon Lee,Sang Kyu Kwak,Jin Young Kim,Dong Suk Kim +14 more
TL;DR: In this article, the function of methylammonium chloride (MACl) additive in formamidinium lead iodide (FAPbI3)-based perovskite was studied.
Journal ArticleDOI
Not All That Glitters Is Gold: Metal-Migration-Induced Degradation in Perovskite Solar Cells.
Konrad Domanski,Juan-Pablo Correa-Baena,N. Mine,Mohammad Khaja Nazeeruddin,Antonio Abate,Michael Saliba,Wolfgang Tress,Anders Hagfeldt,Michael Grätzel +8 more
TL;DR: It is found that exposing PSCs to a temperature of 70 °C is enough to induce gold migration through the hole-transporting layer (HTL), spiro-MeOTAD, and into the perovskite material, which in turn severely affects the device performance metrics under working conditions.
Journal ArticleDOI
Tailored interfaces of unencapsulated perovskite solar cells for >1,000 hour operational stability
Jeffrey A. Christians,Philip Schulz,Jonathan S. Tinkham,Tracy H. Schloemer,Steven P. Harvey,Bertrand J. Tremolet de Villers,Alan Sellinger,Alan Sellinger,Joseph J. Berry,Joseph M. Luther +9 more
TL;DR: The perovskite absorber material itself has been heavily scrutinized for being prone to degradation by water, oxygen and ultraviolet light as discussed by the authors, and it has been shown that even under the combined stresses of light (including ultraviolet light), oxygen and moisture, perovsite solar cells can retain 94% of peak efficiency despite 1,000 hours of continuous unencapsulated operation in ambient air conditions (relative humidity of 10-20%).