Triphenylamine-based organic small-molecule interlayer materials for inverted perovskite solar cells

Doyranlı, Ceylan; Choi, Fatma Pinar Gokdemir; Alishah, Hamed Moeini; Koyuncu, Sermet; Güneş, Serap; San, Nevim

doi:10.1016/j.orgel.2022.106595

Cited by 9 publications

(8 citation statements)

References 67 publications

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“…Hole transporting layers with a smooth surface promote the charge transfer process at the interface, resulting in greater fill factor (FF) and short open-circuit voltage ( V OC ) values . The smaller value of R a shows that the film generated by spin-coating organic molecules on NiO x has a smoother surface and more uniform structure than the bare NiO x film …”

Section: Resultsmentioning

confidence: 99%

“…The 5% weight loss temperatures ( T d ’s) of CC-1 – 3 under a nitrogen atmosphere were 390, 420, and 204 °C, respectively. Compared to all the HTMs that were synthesized in this research, only CC-3 exhibits a lower value than the commonly used HTM spiro-OMeTAD ( T d = 360 °C) .…”

Section: Resultsmentioning

confidence: 99%

“…Compared to all the HTMs that were synthesized in this research, only CC-3 exhibits a lower value than the commonly used HTM spiro-OMeTAD (T d = 360 °C). 31 CC-3 has the lowest T d among other HTLs possibly because it has the highest amount of −CF 3 groups on the structure, which affected the thermal stability of the compound. 51 Furthermore, the glass transition temperatures (T g 's) of CC-1−3 from DSC traces are shown in Figure 5b, and the data are summarized in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…Alternatively, many researches are being conducted to overcome this challenge, one of which is the use of small-molecule-based hole transporting layer materials. Fluorine, , thiophene, , fluorene, , carbazole, triphenylamine, ,, pyrrole, and other chemical derivatives are frequently employed as small molecule hole transporting layer materials. Some research employ dibenzofulvene (9-methylene-fluorene) derivatives as hole transporting layers because fluorene is a prominent construction unit for interfacial charge-transporting materials in PSCs .…”

Section: Introductionmentioning

confidence: 99%

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Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

et al. 2023

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In this work, we synthesized trifluoromethyl group series modified triphenylamine dibenzofulvenes, named as CC-1–3, as a hole transporting interfacial layer to obtain well-matched energy levels and long-term stability features in NiOx-based inverted perovskite solar cells. The optical and thermal properties of these new compounds were investigated. All the compounds were combined with NiOx and formed layer by layer as hole transporting layers (HTLs). The morphology, energy level, and charge transfer resistance were all compared. The NiOx/CC-3 bilayer-based architecture improved the energy level alignment, film morphology, crystallinity, and hole transportation, allowing for a high-quality perovskite layer and interfacial contact behavior. As a result, this inverted cell significantly improved open-circuit voltage (V OC), short current density (J SC), fill factor (FF), and power conversion efficiency (PCE) values up to 21.66 mA cm–2, 1.105 V, 79.33%, and 19.82%, respectively. Remarkably, the NiOx/CC-3 device had negligible hysteresis and long-term stability, retaining over 90% of its original efficiencies under argon and over 80% in the ambient atmosphere after 40 days. This paper shows a new chemical design, particularly for the trifluoromethyl group effect, and a complete understanding of the bilayer HTL technique and its promise for producing efficient cell performance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

et al. 2023

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“…In that sense, numerical simulation can be a very useful tool for studying solar cell performance. One of these tools is the SCAPS 1D software (version 3.3.09), which has been shown to be useful for investigating various solar cell parameters such as device thickness, resistance, and temperature [ 3 ], the theoretical impact of novel hole transport layers [ 4 ], and multiple terminal tandem perovskite devices [ 5 ], or even estimating the potential solar cell devices comprising chalcogenide-based perovskite active layers [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Optimization of FAPbI3 Perovskite Solar Cells with a BaTiO3 Layer for Efficiency Enhancement

et al. 2022

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Since the addition of BaTiO3 in perovskite solar cells (PSCs) provides a more energetically favorable transport route for electrons, resulting in more efficient charge separation and electron extraction, in this work we experimentally prepared such a PSC and used a modeling approach to point out which simulation parameters have an influence on PSC characteristics and how they can be improved. We added a layer of BaTiO3 onto the TiO2 electron transport layer and prepared a PSC, which had an FTO/TiO2/BaTiO3/FAPbI3/spiro-OMeTAD/Au architecture with a power conversion efficiency (PCE) of 11%. Further, we used the simulation program SCAPS-1D to investigate and optimize the device parameters (thickness of the BaTiO3 and absorber layers, doping, and defect concentration) resulting in devices with PCEs reaching up to 15%, and even up to 20% if we assume an ideal structure with no interlayer defects. Our experimental findings and simulations in this paper highlight the promising interplay of multilayer TiO2/BaTiO3 ETLs for potential future applications in PSCs.

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Boosting Efficiency and Stability of NiO_x‐Based Inverted Perovskite Solar Cells Through D–A Type Semiconductor Interface Modulation

Sun,

Zhang,

Gao

et al. 2024

Adv Funct Materials

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NiOx is one of the promising inorganic hole transporting materials in inverted perovskite solar cells (PSCs), however, its device efficiency and stability are still limited by the energy level mismatch, low intrinsic conductivity, high interface defect density, and complex active species. Herein, the use of an imide‐based donor–acceptor type semiconductor (BTF14) as the interlayer between perovskite and NiOx is proposed, which facilitates the hole extraction and transfer, reduces the defect density at interface and in perovskite film bulk, and further reduces the concentration of Ni>3+ species to stabilize the heterointerface. As a result, the power conversion efficiency of inverted PSCs can be significantly boosted from 22.11% of NiOx to 24.20% of NiOx/BTF14. Moreover, NiOx/BTF14 based devices also exhibit negligible hysteresis and excellent long‐term stability, with over 77% of their initial efficiency remaining after continuous operation at 60 °C for 1000 h under 1 sun illumination.

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Triphenylamine-based organic small-molecule interlayer materials for inverted perovskite solar cells

Cited by 9 publications

References 67 publications

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

Simulation and Optimization of FAPbI3 Perovskite Solar Cells with a BaTiO3 Layer for Efficiency Enhancement

Boosting Efficiency and Stability of NiO_x‐Based Inverted Perovskite Solar Cells Through D–A Type Semiconductor Interface Modulation

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Triphenylamine-based organic small-molecule interlayer materials for inverted perovskite solar cells

Cited by 9 publications

References 67 publications

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

Passivation of Inverted Perovskite Solar Cells by Trifluoromethyl-Group-Modified Triphenylamine Dibenzofulvene Hole Transporting Interfacial Layers

Simulation and Optimization of FAPbI3 Perovskite Solar Cells with a BaTiO3 Layer for Efficiency Enhancement

Boosting Efficiency and Stability of NiOx‐Based Inverted Perovskite Solar Cells Through D–A Type Semiconductor Interface Modulation

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Product

Resources

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Boosting Efficiency and Stability of NiO_x‐Based Inverted Perovskite Solar Cells Through D–A Type Semiconductor Interface Modulation