Thiols as interfacial modifiers to enhance the performance and stability of perovskite solar cells

Cao, Jing; Yin, Jun; Yuan, Shang‐Fu; Zhao, Yun; Li, Jing; Zheng, Nanfeng

doi:10.1039/c5nr01820j

Cited by 191 publications

(161 citation statements)

References 31 publications

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“…While the control device almost did not work after 12 h exposure to light, with TiO 2 /Sb 2 S 3 as ETL, PCE still maintained 65% of the initial value after the 12 h. This result again confirmed that UV‐induced reaction at the TiO 2 /CH 3 NH 3 PbI 3 interface was partly responsible for the degradation of the perovskite 113. In addition, other efficient modifiers have also been reported, including carboxylic acid–thiol ligands (HOOC—Ph—SH),114 fullerene derivatives PCBDAN,115 ionic‐liquid,116 LiSPS,117 cesium chloride,118 and polyoxyethylene 119…”

Section: Device Structurementioning

confidence: 99%

Recent Progress on the Long‐Term Stability of Perovskite Solar Cells

et al. 2018

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As rapid progress has been achieved in emerging thin film solar cell technology, organic–inorganic hybrid perovskite solar cells (PVSCs) have aroused many concerns with several desired properties for photovoltaic applications, including large absorption coefficients, excellent carrier mobility, long charge carrier diffusion lengths, low‐cost, and unbelievable progress. Power conversion efficiencies increased from 3.8% in 2009 up to the current world record of 22.1%. However, poor long‐term stability of PVSCs limits the future commercial application. Here, the degradation mechanisms for unstable perovskite materials and their corresponding solar cells are discussed. The strategies for enhancing the stability of perovskite materials and PVSCs are also summarized. This review is expected to provide helpful insights for further enhancing the stability of perovskite materials and PVSCs in this exciting field.

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Section: Device Structurementioning

confidence: 99%

Recent Progress on the Long‐Term Stability of Perovskite Solar Cells

et al. 2018

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“…Pentafluorobenzenethiol, for example, was shown to increase the device durability at a relative humidity of 45%. 53 Modifying the perovskite surface with dodecyltrimethoxysilane (C 12 -silane), the devices lost merely 15% of their initial efficiency after 600 h under ambient conditions. 54 The main objective of many barrier layers is to hamper any moisture diffusion through the hole-transporter to prevent degradation.…”

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confidence: 99%

Research Update: Strategies for improving the stability of perovskite solar cells

et al. 2016

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The power-conversion efficiency of perovskite solar cells has soared up to 22.1% earlier this year. Within merely five years, the perovskite solar cell can now compete on efficiency with inorganic thin-film technologies, making it the most promising of the new, emerging photovoltaic solar cell technologies. The next grand challenge is now the aspect of stability. The hydrophilicity and volatility of the organic methylammonium makes the work-horse material methylammonium lead iodide vulnerable to degradation through humidity and heat. Additionally, ultraviolet radiation and oxygen constitute stressors which can deteriorate the device performance. There are two fundamental strategies to increasing the device stability: developing protective layers around the vulnerable perovskite absorber and developing a more resilient perovskite absorber. The most important reports in literature are summarized and analyzed here, letting us conclude that any long-term stability, on par with that of inorganic thin-film technologies, is only possible with a more resilient perovskite incorporated in a highly protective device design.

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“…This increase of the efficiency was explained by the retardation of charge recombination, and better perovskite crystal growth. Some other organic monolayers were used to modify the surface of scaffold through the influence of the morphology and growth of perovskite, such as glycine, thiols and 4-aminobenzoic acid, yielding positive effects on cell performance [75][76][77]. A summary of the published representative results of MPSCs' performance parameters with different scaffold interface modification is listed in Table 2.…”

Section: Scaffold Interface Engineeringmentioning

confidence: 99%