Black phosphorus doped Poly(triarylamine) as hole transport layer for highly efficient perovskite solar cells

Wei, Dong; Xiong, Shaobing; Yang, Jianming; Qiao, Wen-Cheng; Zeng, Quan; Wang, Xuelu; Yao, Yefeng; Bao, Qinye

doi:10.1016/j.orgel.2020.106052

Cited by 18 publications

(17 citation statements)

References 28 publications

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“…As shown in Supplementary Figure S4, the ideality factor (m) was measured to evaluate the recombination process in PSCs. The value of m for SrCl 2 -doped devices (1.31 kT/e) is smaller than 1.74 kT/e of the pristine device, illustrating the reduced trap-assisted charge recombination, where K is the Boltzmann constant, T is an absolute temperature of 300 K, and e is the elementary charge (Aydin et al, 2019;Dong et al, 2021).…”

Section: Resultsmentioning

confidence: 88%

Improved Photovoltaic Performance of CsPbI2Br Perovskite Films via Bivalent Metal Chloride Doping

et al. 2021

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Cesium-based all-inorganic perovskite absorbers have attracted increasing attention due to their superior thermal stability, compared to their organic–inorganic counterparts. Up to now, it is a challenge to fabricate high-efficiency all-inorganic perovskite solar cells (PSCs) with low defect densities. Herein, we used bivalent metal chloride salts (SrCl2 and NiCl2) to optimize CsPbI2Br films. The experimental results indicate that this method could deliver high-quality films with improved electronic property. As a result, the champion device based on the 0.01 M SrCl2–doped CsPbI2Br film achieved a power conversion efficiency (PCE) of 16.07% with a high open voltage (VOC) of 1,322 mV, which is about 18% higher than that of the pristine device.

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Section: Resultsmentioning

confidence: 88%

Improved Photovoltaic Performance of CsPbI2Br Perovskite Films via Bivalent Metal Chloride Doping

et al. 2021

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“…[ 153 ] Furthermore, adding 2D black phosphorus was recently reported to ameliorate the HTL conductivity and improve the carrier extraction. [ 154 ] Above 20% PCE was achieved using this approach in PTAA. [ 154 ] Although many different types of dopants have been tested, F4‐TCNQ still dominated the efficiency advantages until very recently Xu et al reported a 21.87% PCE from adding BDT‐Si small molecule into the PTAA.…”

Section: Ptaa In P–i–n Devicesmentioning

confidence: 99%

“…[ 154 ] Above 20% PCE was achieved using this approach in PTAA. [ 154 ] Although many different types of dopants have been tested, F4‐TCNQ still dominated the efficiency advantages until very recently Xu et al reported a 21.87% PCE from adding BDT‐Si small molecule into the PTAA. [ 144 ] Benefiting from the reduced energy disorder, due to the improved intermolecular stacking of long‐chain PTAA with small‐molecule doping, the quasi‐Fermi‐level splitting and band alignment were improved.…”

Section: Ptaa In P–i–n 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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“…In this context, an organic-inorganic hybrid state-of-the-art material, e.g., 2,2 ,7,7 -tetrakis-(N,N-di-p-methoxy-phenyl-amine)-9,9 -spiro-bifluorene (spiro-OMeTAD) has mainly been used so far in different research works due to its enhanced PV performance, amorphous nature, and optimal solubility in various organic solvents [51,60,162,[248][249][250]. Furthermore, poly(tri-arylamine, a polymeric organic material, has been introduced by many researchers to yield high certified PCEs in regular planar structured devices [155,167,[251][252][253]. However, in terms of stability, both materials have failed to gratify the researchers due to their various intrinsic properties.…”

Section: Improvement and Modification Of Hole Transport Layers (Htls)mentioning

confidence: 99%

Recent Criterion on Stability Enhancement of Perovskite Solar Cells

et al. 2022

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Perovskite solar cells (PSCs) have captured the attention of the global energy research community in recent years by showing an exponential augmentation in their performance and stability. The supremacy of the light-harvesting efficiency and wider band gap of perovskite sensitizers have led to these devices being compared with the most outstanding rival silicon-based solar cells. Nevertheless, there are some issues such as their poor lifetime stability, considerable J–V hysteresis, and the toxicity of the conventional constituent materials which restrict their prevalence in the marketplace. The poor stability of PSCs with regard to humidity, UV radiation, oxygen and heat especially limits their industrial application. This review focuses on the in-depth studies of different direct and indirect parameters of PSC device instability. The mechanism for device degradation for several parameters and the complementary materials showing promising results are systematically analyzed. The main objective of this work is to review the effectual strategies of enhancing the stability of PSCs. Several important factors such as material engineering, novel device structure design, hole-transporting materials (HTMs), electron-transporting materials (ETMs), electrode materials preparation, and encapsulation methods that need to be taken care of in order to improve the stability of PSCs are discussed extensively. Conclusively, this review discusses some opportunities for the commercialization of PSCs with high efficiency and stability.

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Black phosphorus doped Poly(triarylamine) as hole transport layer for highly efficient perovskite solar cells

Cited by 18 publications

References 28 publications

Improved Photovoltaic Performance of CsPbI2Br Perovskite Films via Bivalent Metal Chloride Doping

Improved Photovoltaic Performance of CsPbI2Br Perovskite Films via Bivalent Metal Chloride Doping

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

Recent Criterion on Stability Enhancement of Perovskite Solar Cells

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