An efficient and hydrophobic molecular doping in perovskite solar cells

Luo, Junsheng; Lin, Fangyan; Xia, Jianxing; Yang, Hua; Zhang, Ruilin; Malik, Haseeb Ashraf; Shu, Hongyu; Wan, Zhongquan; Han, Keli; Wang, Ruilin; Yao, Xiaojun; Jia, Chunyang

doi:10.1016/j.nanoen.2021.105751

Cited by 50 publications

(41 citation statements)

References 37 publications

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“…Femtosecond transient absorption (fs-TA) spectra were further acquired to explore the possible phase structures of the perovskite precursor films during the annealing process. [28][29][30] Figure 3a and Figure S3 (Supporting Information) display fs-TA spectra of the control film. As the annealing temperature rises from room temperature to 60 °C, a bleaching peak near 650 nm appears corresponding to the CsPbI 2 Br phase.…”

Section: Resultsmentioning

confidence: 99%

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI₂Br Perovskite Solar Cells

Yang

Wen

Liu

et al. 2021

Advanced Energy Materials

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Inorganic CsPbI2Br perovskite is promising for solar cell applications due to its excellent thermal stability and optoelectronic characteristics. Unfortunately, the current high‐efficiency CsPbI2Br perovskite solar cells (PSCs) are mostly fabricated in an inert atmosphere due to their instability to moisture. Herein, a low‐dimensional intermediate‐assisted growth (LDIAG) method is reported for the deposition of CsPbI2Br film in ambient atmosphere by introducing imidazole halide (IMX: IMI and IMBr) into the precursor solution to control both nucleation and growth kinetics. The IMX first combines with PbI2 in the precursor film to form a 2D intermediate which then gradually releases PbI2 to slowly form high‐quality CsPbI2Br film during annealing. It is found that the LDIAG method produces a uniform, highly crystalline, pinhole‐free, and stable CsPbI2Br film with low defect density. Consequently, the solar cell efficiency is increased to as high as 17.26%, one of the highest for this type of device. Furthermore, the bare device without any encapsulation shows excellent long‐term stability with ≈86% of its initial efficiency retained after being exposed to the ambient environment for 1000 h. This work provides a perspective to tune the intermediate phases and crystallization pathway for high‐performance inorganic PSCs formed under ambient conditions.

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Section: Resultsmentioning

confidence: 99%

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI₂Br Perovskite Solar Cells

Yang

Wen

Liu

et al. 2021

Advanced Energy Materials

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“…[ 96 ] A recent study from the same group uses fluorinated iron III porphine as a novel dopant to replace Li‐TFSI and tBP. [ 85 ] This new hydrophobic dopant blocks the moisture from damaging the device. [ 85 ] In addition, the PCE improved from 21% to nearly 22%.…”

Section: Ptaa In N–i–p Devicesmentioning

confidence: 99%

“…[ 85 ] This new hydrophobic dopant blocks the moisture from damaging the device. [ 85 ] In addition, the PCE improved from 21% to nearly 22%. [ 85 ]…”

Section: Ptaa In N–i–p Devicesmentioning

confidence: 99%

PTAA as Efficient Hole Transport Materials in Perovskite Solar Cells: A Review

et al. 2022

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Perovskite solar cells (PSCs) with a power conversion efficiency (PCE) overpassing 25% have proved to be the most promising competitor for the next‐generation photovoltaic technology. Massive efforts are devoted to the improvement of the performance and stability of PSCs, whereas the hole transport layer (HTL) has attracted significant interest. Among diverse hole transport materials, poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine (PTAA) is one of the most promising candidates due to its ease of fabrication, transparency to visible light, mechanical flexibility, conductivity, and stability. Over the past few years, there has been an increasing amount of research using PTAA as the HTL first in n–i–p and then in p–i–n PSCs with extended applications in flexible, large‐area, and tandem devices. Herein, a progress review on PTAA for PSC applications is provided, which enables a better understanding of the advantages and disadvantages of PTAA, as well as the approaches to fully realizing its tremendous potential. The emerging and promising research directions for PTAA‐based PSCs are discussed, shedding light on the practical applications of PTAA.

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“…[ 285,286 ] Elemental or ionic doping in perovskite materials. [ 287,288 ] Perovskite surface passivation treatment. [ 218,220 ] Suppression of ion migration.…”

Section: Challenges and Remedial Steps To Boost Pscs Performancementioning

confidence: 99%

Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

Sahare

Pham

Angmo

et al. 2021

Advanced Energy Materials

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Perovskite solar cells (PSCs) exhibit the steepest growth in power conversion efficiency among the existing photovoltaic technologies. However, a wide range of factors restrict the commercial viability of PSCs as a renewable energy source. This article reviews the latest progress in PSC devices including innovative light‐harvesting perovskite materials and advanced interfacial layers, and the foremost challenges. The most promising remedial solutions to challenges are also discussed. For the realization of a high performing and eco‐friendly stabilized perovskite photovoltaic device, a combinational method involving multiple restorative solutions is required. A specific emphasis is given to unveiling interesting perovskite properties, and device fabrication approaches to the solutions. These remedies and strategies may help researchers to select appropriate methods and design their experiments to obtain a high photo‐conversion efficiency in photovoltaic devices with enhanced stability as compared to conventional photovoltaic devices.

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An efficient and hydrophobic molecular doping in perovskite solar cells

Cited by 50 publications

References 37 publications

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI₂Br Perovskite Solar Cells

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI₂Br Perovskite Solar Cells

PTAA as Efficient Hole Transport Materials in Perovskite Solar Cells: A Review

Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

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An efficient and hydrophobic molecular doping in perovskite solar cells

Cited by 50 publications

References 37 publications

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI2Br Perovskite Solar Cells

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI2Br Perovskite Solar Cells

PTAA as Efficient Hole Transport Materials in Perovskite Solar Cells: A Review

Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

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A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI₂Br Perovskite Solar Cells

A Key 2D Intermediate Phase for Stable High‐Efficiency CsPbI₂Br Perovskite Solar Cells