Improved Stability of MAPbI<sub>3</sub>Perovskite Solar Cells Using Two-Dimensional Transition-Metal Dichalcogenide Interlayers

Kim, Bora; Kim, Moonhoe; Kim, Hyojung; Jeong, Sohee; Yang, JungYup; Jeong, Mun Seok

doi:10.1021/acsami.2c08680

Cited by 13 publications

(10 citation statements)

References 49 publications

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“…The results show that dual interface modification can achieve interface passivation and promote carrier transfer, and finally it can improve the efficiency and stability of PSCs. [ 118 ]…”

Section: Interfacial Layer For Buried Passivationmentioning

confidence: 99%

“…The results show that dual interface modification can achieve interface passivation and promote carrier transfer, and finally it can improve the efficiency and stability of PSCs. [118] In addition, some quantum dots were used to modify the buried interface. Gao et al used imidazole bromide functionalized graphene quantum dots (I-GQDs) to modify the SnO 2 /perovskite interface.…”

Section: D Materials As Passivated Materialsmentioning

confidence: 99%

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Buried Interface Passivation: A Key Strategy to Breakthrough the Efficiency of Perovskite Photovoltaics

Huang

Lou

Wang

2023

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Owing to the merits of low cost and high power conversion efficiency (PCE), perovskite solar cells (PSCs) have become the best candidate to replace the commonly used silicon solar cells. However, PSCs have been slow to enter the market for a number of reasons, including poor stability, high toxicity, and rigorous preparation process. Passivation strategies including surface passivation and bulk passivation have been successfully applied to improve the device performance of PSCs. The passivation of the defects at the buried interface, which is regarded as a key strategy to breakthrough the device efficiency and stability of PSCs in the future, is ongoing with challenge. Herein, in detail the recent passivation of the buried interface is introduced from three aspects: perovskite layer, buried interlayer, and transport layer. The passivation effect of the buried interface is clearly demonstrated through three categories of salts, organics, and 2D materials. In addition, the transport layer is classified into electron transport layer (ETL) and hole transport layer (HTL). These classifications can help to have a clear understanding of substances which generate passivating effect and guide the continuous promotion of the follow‐up buried interface passivating work.

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“…The results show that dual interface modification can achieve interface passivation and promote carrier transfer, and finally it can improve the efficiency and stability of PSCs. [ 118 ]…”

Section: Interfacial Layer For Buried Passivationmentioning

confidence: 99%

Section: D Materials As Passivated Materialsmentioning

confidence: 99%

Buried Interface Passivation: A Key Strategy to Breakthrough the Efficiency of Perovskite Photovoltaics

Huang

Lou

Wang

2023

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“…Recently, we observed 42% hot hole transfer efficiency from CsPbBr 3 nanocrystals using surface-anchored porphyrin molecules . Furthermore, a transition metal dichalcogenide and conjugated polymer have been employed to extract the HC from perovskite nanocrystals. − We investigated the efficient extraction of the hot electrons from CsPbBr 3 nanocrystals to the reduced graphene oxide using ultrafast transient absorption spectroscopy . Hayase et al have used Al 2 O 3 , poly(3-hexylthiophene-2,5-diyl) (P3HT), and TiO 2 as selective contact materials to extract the HCs from CsPbI 3 nanocrystals .…”

Section: Introductionmentioning

confidence: 99%

Electron Transfer Dynamics from CsPbBr₃ Nanocrystals to Au₁₄₄ Clusters

Marjit

Ghosh

et al. 2023

ACS Phys. Chem Au

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Lead halide perovskite nanocrystals have received significant attention as an absorber material for designing efficient optoelectronic devices. The fundamental understanding of the hot carrier (HC) dynamics as well as its extraction in hybrid systems is essential to further boost the performance of solar cells. Herein, we have explored the electron transfer dynamics in the CsPbBr 3 -Au 144 cluster hybrid using ultrafast transient absorption spectroscopy. Our analysis reveals faster HC cooling time (from 515 to 334 fs) and a significant drop in HC temperature from 1055 to 860 K in hybrid, suggesting the hot electron transfer from CsPbBr 3 nanocrystals to the Au nanoclusters (NCs). Eventually, we observe a much faster hot electron transfer compared to the band-edge electron transfer, and 45% hot-electron transfer efficiency was achieved at 0.64 eV, above band-edge photoexcitation. Furthermore, the significant enhancement of the photocurrent to the dark current ratio in this hybrid system confirms the charge separation via the electron transfer from CsPbBr 3 nanocrystals to Au 144 NCs. These findings on HC dynamics could be beneficial for optoelectronic devices.

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“…1 Nowadays, they have been the subject of increased attention in nonlinear optical (NLO) research. 2 Their excellent photoelectric properties, containing high absorption coefficient, 3 tunable band gap, 4 high carrier mobility, 5 appropriate exciton binding energy, 6 and large oscillator strength, 7 give researchers an insight into their possibility in the field of nonlinear photonic device development. For instance, Kalanoor et al studied NLO responses of an organometallic methylamine-lead-iodide (MAPbI 3 ) perovskite film.…”

Section: Introductionmentioning

confidence: 99%

Donor–π–Acceptor Porphyrin-Assisted Bifunctional Defect Passivation for Enhanced Temporal Domain-/Wavelength-Dependent Nonlinear Absorption Properties in Perovskite Films

Guan,

Wei,

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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Perovskite layer defects are a primary inhibiting factor for their optical nonlinearity, which restricts their use in nonlinear photonics devices. Nevertheless, due to the variety of defect types, the passivation and repair of these defects remain challenging. Herein, a novel bifunctional passivation strategy was proposed, and the porphyrin with a donor–π–acceptor structure was designed to bifunctionally repair perovskite defects by linking different types of functional groups via acetylenic π-conjugated linkage bridges on both sides, thus improving the nonlinear optical (NLO) absorption properties of porphyrin–perovskite hybrid materials. Research results indicate that the amino and carboxyl groups of porphyrins endow the ability to bifunctionally passivate charged defects via effective coordination interactions. The nonlinear absorption properties of all porphyrin-passivated MAPbI3 films were remarkably enhanced compared to that of the MAPbI3 film across multiple wavelengths and temporal domains. Particularly, the Por3-passivated perovskite film (MAPbI 3 /Por3) exhibited optimized strongest NLO performance, including reverse saturable absorption (RSA) under 800 nm femtosecond (fs) and 1064 nm nanosecond (ns) laser irradiations, as well as saturable absorption (SA) with 515 and 532 nm ns laser excitations. The value of the NLO absorption coefficient (β = 266.23 cm GW–1) is 1 order of magnitude higher than that of the pristine perovskite film (β = 12.93 cm GW–1), also outperforming other porphyrin-passivated perovskite films and some reported materials. The bifunctional passivation mechanism of porphyrin not only intensifies the perovskite’s photoinduced ground-state dipole moment in the two-photon absorption (TPA) process and the free carrier absorption ability to deepen the RSA properties under 800 nm fs and 1064 nm ns lasers, respectively, but also enables the improvement of SA responses under 515 nm fs and 532 nm ns lasers by expediting the Pauli blocking effect of perovskite. Our study offers a viable paradigm, which aims at exploiting high-performance NLO perovskite materials across wide spectral regions and time scales.

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Improved Stability of MAPbI₃Perovskite Solar Cells Using Two-Dimensional Transition-Metal Dichalcogenide Interlayers

Cited by 13 publications

References 49 publications

Buried Interface Passivation: A Key Strategy to Breakthrough the Efficiency of Perovskite Photovoltaics

Buried Interface Passivation: A Key Strategy to Breakthrough the Efficiency of Perovskite Photovoltaics

Electron Transfer Dynamics from CsPbBr₃ Nanocrystals to Au₁₄₄ Clusters

Donor–π–Acceptor Porphyrin-Assisted Bifunctional Defect Passivation for Enhanced Temporal Domain-/Wavelength-Dependent Nonlinear Absorption Properties in Perovskite Films

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Improved Stability of MAPbI3Perovskite Solar Cells Using Two-Dimensional Transition-Metal Dichalcogenide Interlayers

Cited by 13 publications

References 49 publications

Buried Interface Passivation: A Key Strategy to Breakthrough the Efficiency of Perovskite Photovoltaics

Buried Interface Passivation: A Key Strategy to Breakthrough the Efficiency of Perovskite Photovoltaics

Electron Transfer Dynamics from CsPbBr3 Nanocrystals to Au144 Clusters

Donor–π–Acceptor Porphyrin-Assisted Bifunctional Defect Passivation for Enhanced Temporal Domain-/Wavelength-Dependent Nonlinear Absorption Properties in Perovskite Films

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Improved Stability of MAPbI₃Perovskite Solar Cells Using Two-Dimensional Transition-Metal Dichalcogenide Interlayers

Electron Transfer Dynamics from CsPbBr₃ Nanocrystals to Au₁₄₄ Clusters