Evident Enhancement of Efficiency and Stability in Perovskite Solar Cells with Triphenylamine-Based Macromolecules on the CuSCN Hole-Transporting Layer

Zhou, Jianjun; Liu, Pan; Du, Yongqiang; Zong, Wansheng; Zhang, Bingbing; Liu, Yingliang; Xu, Shengang; Cao, Shaokui

doi:10.1007/s11664-021-08916-6

Cited by 11 publications

(11 citation statements)

References 37 publications

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“…12,13 Moreover, there are other HTMs that can be employed to replace the use of spiro-OMeTAD to enhance the stability of the device, such as inorganic HTMs (e.g., CuSCN, 14 NiO x , 15 CuO x , 16 CuI, 17 PbS/CdS, 18 etc.) and polymer-based HTMs (e.g., PTAA, 19 poly-TPD, 20 P3HT/ PCBM, 21 etc.). A device fabricated using inorganic HTMs offers low cost as well as long-term ambient humidity stability compared to the one using spiro-OMeTAD.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Stable Carbon-Based Perovskite Solar Cells Enabled by Mixed CuPc:CuSCN Hole Transporting Layer for Indoor Applications

Makming

Homnan

Ngamjarurojana

et al. 2023

ACS Appl. Mater. Interfaces

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Perovskite solar cells (PSCs) are an innovative technology with great potential to offer cost-effective and high-performance devices for converting light into electricity that can be used for both outdoor and indoor applications. In this study, a novel hole-transporting layer (HTL) was created by mixing copper phthalocyanine (CuPc) molecules into a copper(I) thiocyanate (CuSCN) film and was applied to carbon-based PSCs with cesium/formamidinium (Cs0.17FA0.83Pb(I0.83Br0.17)3) as a photoabsorber. At the optimum concentration, a high power conversion efficiency (PCE) of 15.01% was achieved under AM1.5G test conditions, and 32.1% PCE was acquired under low-light 1000 lux conditions. It was discovered that the mixed CuPc:CuSCN HTL helps reduce trap density and improve the perovskite/HTL interface as well as the HTL/carbon interface. Moreover, the PSCs based on the mixed CuPc:CuSCN HTL provided better stability over 1 year due to the hydrophobicity of CuPc material. In addition, thermal stability was tested at 85 °C and the devices achieved an average efficiency drop of approximately 50% of the initial PCE value after 1000 h. UV light stability was also examined, and the results revealed that the average efficiency drop of 40% of the initial value for 70 min of exposure was observed. The work presented here represents an important step toward the practical implementation of the PSC as it paves the way for the development of cost-effective, stable, yet high-performance PSCs for both outdoor and indoor applications.

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Section: Introductionmentioning

confidence: 99%

Efficient and Stable Carbon-Based Perovskite Solar Cells Enabled by Mixed CuPc:CuSCN Hole Transporting Layer for Indoor Applications

Makming

Homnan

Ngamjarurojana

et al. 2023

ACS Appl. Mater. Interfaces

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“…Triphenylamine (TPA) is a class of amine substituted with three aryl groups, which has a nonplanar molecular configuration, convenient structural modification, excellent electron-donating capability, and a good hole-transporting property. − In recent years, TPA-based materials have greatly promoted the development of organic and hybrid photovoltaics such as organic solar cells (OSCs), , dye-sensitized solar cells (DSSCs), , and perovskite solar cells (PSCs). − However, there are some key issues that need to be overcome such as physical and chemical interaction between the perovskite and hole-transporting material (HTM) layer . Hence, an in-depth understanding of the relationship between molecular structure and properties is the key to designing high-performance materials.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Triphenylamine Macrocycles and Co-assembly with Guest Molecules at the Liquid–Solid Interface Studied by STM: Influence of Different Side Chains on Host–Guest Interaction

Meng

Lei

et al. 2022

Langmuir

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The side chains of macrocyclic molecules have a non-negligible effect on the two-dimensional (2D) supramolecular networks at the liquid–solid interface. In this study, we investigate the self-assembly behaviors of two conjugated triphenylamine macrocycles modified with different alkyl chains and construct the host–guest supramolecular nanopatterns on the highly oriented pyrolytic graphite with a scanning tunneling microscope. In combination with density functional theory calculations, how different side chains affect the host–guest interaction is discussed. This work provides insights into constructing a 2D host–guest dynamic co-assembly on the surface.

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“…For instance, Arora et al concluded that the instability of PSCs mainly originates from the CuSCN/Au interface contact and is not related to the degradation of the CuSCN/perovskite interface, so they introduced a thin conductive rGO (reduced graphene oxide) modified layer between CuSCN and Au to effectively alleviate the problem of interface degradation [4]. Zhou et al introduced a poly-TPD ultra-thin layer to modify the HTL/Ag interface, thereby improving the efficiency of the solar cell (from 5.95% to 10.36%) because it can smooth the barrier between the HTL and electrode to promote the transmission of holes and passivate the surface defects to improve the interface contact [5]. However, for organic materials, the stability is a deadly point when they are employed in a complex environment.…”

Section: Introductionmentioning

confidence: 99%

The Investigation of the Influence of a Cu2O Buffer Layer on Hole Transport Layers in MAPbI3-Based Perovskite Solar Cells

Lin

Liu

et al. 2022

Materials

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The passivation engineering of the hole transport layer in perovskite solar cells (PSCs) has significantly decreased carrier accumulation and open circuit voltage (Voc) loss, as well as energy band mismatching, thus achieving the goal of high-power conversion efficiency. However, most devices incorporating organic/inorganic buffer layers suffer from poor stability and low efficiency. In this article, we have proposed an inorganic buffer layer of Cu2O, which has achieved high efficiency on lower work function metals and various frequently used hole transport layers (HTLs). Once the Cu2O buffer layer was applied to modify the Cu/PTAA interface, the device exhibited a high Voc of 1.20 V, a high FF of 75.92%, and an enhanced PCE of 22.49% versus a Voc of 1.12 V, FF of 69.16%, and PCE of 18.99% from the (PTAA/Cu) n-i-p structure. Our simulation showed that the application of a Cu2O buffer layer improved the interfacial contact and energy alignment, promoting the carrier transportation and reducing the charge accumulation. Furthermore, we optimized the combinations of the thicknesses of the Cu2O, the absorber layer, and PTAA to obtain the best performance for Cu-based perovskite solar cells. Eventually, we explored the effect of the defect density between the HTL/absorber interface and the absorber/ETL interface on the device and recommended the appropriate reference defect density for experimental research. This work provides guidance for improving the experimental efficiency and reducing the cost of perovskite solar cells.

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Evident Enhancement of Efficiency and Stability in Perovskite Solar Cells with Triphenylamine-Based Macromolecules on the CuSCN Hole-Transporting Layer

Cited by 11 publications

References 37 publications

Efficient and Stable Carbon-Based Perovskite Solar Cells Enabled by Mixed CuPc:CuSCN Hole Transporting Layer for Indoor Applications

Efficient and Stable Carbon-Based Perovskite Solar Cells Enabled by Mixed CuPc:CuSCN Hole Transporting Layer for Indoor Applications

Self-Assembly of Triphenylamine Macrocycles and Co-assembly with Guest Molecules at the Liquid–Solid Interface Studied by STM: Influence of Different Side Chains on Host–Guest Interaction

The Investigation of the Influence of a Cu2O Buffer Layer on Hole Transport Layers in MAPbI3-Based Perovskite Solar Cells

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