Enhance stability of γ-CsSnI3-based PSCs by (γ-CsSnI3-Cs2SnI6) heterojunction

Chabri, I.; Benhouria, Y.; Oubelkacem, A.; Kaiba, A.; Essaoudi, I.; Ainane, A.

doi:10.1016/j.solmat.2023.112426

Cited by 11 publications

(3 citation statements)

References 72 publications

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“…Kapton tape was utilized in this process, demonstrating that the device can endure 30 d of exposure to 60% relative humidity and remain stable at high temperatures such as 240 PVKs have led to the poor stability of these materials. The material's thermal stability is considerably improved when cesium (Cs + ) is used instead of the organic cation [54]. Formamidinium (FA) based Sn-halide PSCs showed better performance than the other two and recorded PCE of 14% [55].…”

Section: Recommendationsmentioning

confidence: 99%

Correlation between defect properties and the performance of eco-friendly CsSnI₃-based perovskite solar cells

Mottakin,

Su’Ait,

Chelvanathan

et al. 2024

Semicond. Sci. Technol.

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This study investigates the potential use of eco-friendly, all-inorganic CsSnI3 perovskite (PVK) as an absorber layer. Despite having higher temperature stability of CsSnI3,the challenge is to get a uniform and defect-free film that hinders the performance. To accomplish this goal, we investigated several PSC performance-related variables, including material defect density (Nt), transport materials, layer thickness, temperature impacts, and back contact work functions. TiO2 demonstrates the best performances as ETL and PEDOT:PSS as HTL. Negative valence band or conduction band offset values indicate no barrier preventing photogenerated carriers from flowing into the charge transport layers. The simulation result shows that HTL thickness shows a higher impact than ETL thickness. For the PVK thickness of 500 nm and a carrier density of 1018 cm−3, the device offers an optimum PCE of 20.1 %. The PVK defect significantly impacts performance more than the interface defect. Higher recombination occurs at the TiO2-CsSnI3 interface. Defects in the deep-level trap (DLT) at the middle of the band gap energy are detrimental to device performance. The proposed structure's temperature coefficient (CT) is approximately ‒0.367 % K‒1, indicating excellent thermal stability in an open environment. Selection of 'A' cation, addition of additives, or carefully controlled fabrication technique can passivate the defect. This research shows the strategy for creating defects-free perovskite solar cell devices, ultimately enhancing performance and stability.

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Section: Recommendationsmentioning

confidence: 99%

Correlation between defect properties and the performance of eco-friendly CsSnI₃-based perovskite solar cells

Mottakin,

Su’Ait,

Chelvanathan

et al. 2024

Semicond. Sci. Technol.

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“…In addition, device simulation with C 60 and PCBM as electron transport layers (ETLs) and B-γ-CsSnI 3 as an absorber for an inverted configuration has proposed PCE ∼ 20.03% . Chabri et al reported ∼8.48% PCE with all inorganic charge transport layers (CTLs) at room temperature in an inverted p–n junction . However, the high PCE was achieved using a whole organic CTL, which is prone to instability.…”

Section: Introductionmentioning

confidence: 99%

“…38 Chabri et al reported ∼8.48% PCE with all inorganic charge transport layers (CTLs) at room temperature in an inverted p−n junction. 39 However, the high PCE was achieved using a whole organic CTL, which is prone to instability. Furthermore, some reports also highlight the charge accumulation issue on the ETL side as a major reason for low performance in B-γ-CsSnI 3 inverted devices, which could be suppressed via an additional thin layer, BCP, between the ETL and the metal electrode.…”

Section: Introductionmentioning

confidence: 99%

Insight into the Microband Offset and Charge Transport Layer’s Suitability for an Efficient Inverted Perovskite Solar Cell: A Case Study for Tin-Based B-γ-CsSnI₃

Ramawat,

Kukreti,

Sapkota

et al. 2024

Energy Fuels

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Inverted stacking of layers or p-i-n configurationbased perovskite solar cells are gaining popularity due to their superior operational stability and lower processing temperatures over conventional stacking. Instead of potentially hazardous Pbbased perovskite solar cells, the B-γ-CsSnI 3 black orthorhombic solar cell is a potential alternative. We carried out a thorough investigation using drift-diffusion numerical modeling based on a pi-n structure with four HTL layers (NiO x , CuO, PEDOT:PSS, and P3HT) and three electron transport layers (ETLs) (C 60 , PDINO, and PCBM). The transport layers are initially filtered based on the micro-offset between the interface layer and the energy levels of the perovskite absorber. At a valence band offset of ∼0.2 eV, for NiO x , a high-power conversion efficiency (PCE) of ∼24% is achieved. PCBM has exhibited the best ETL performance across all HTL combinations due to its efficient electron extraction characteristics. Further, PCE is optimized against concentrations of deep defects in the absorber layer, trap sites in the interfaces, and the doping of the transport layer for a better understanding of the practical devices. To combat the suboptimal electronic transitions belonging to >600 nm wavelength highlighted by density functional theory simulations in the study, we investigated the variations in absorber thickness, revealing ∼1.0 μm as a suitable absorber thickness. We also accounted for temperature and sheet resistance variance and the multiple location spectrum caused by climatic and geographical factors. The findings suggest the suitability of NiO x HTL for PCE > 24%, and it will help experimentalists better understand charge transport.

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CH3NH3SnI3${\mathrm{CH}}_{\mathrm{3}}{\mathrm{NH}}_{\mathrm{3}}{\mathrm{SnI}}_{\mathrm{3}}$: Superior Light Absorption and Optimized Device Architecture with 31.93% Efficiency

Hajjami,

Chabri,

Oubelkacem

et al. 2024

Advcd Theory and Sims

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This research investigates and optimizes the perovskite solar cells. Initially, optoelectronic parameters of perovskite absorber materials, including , , and , are estimated using Density Functional Theory (DFT) principles implemented in the Quantum Espresso software. The absorption of light energy is examined, detailing electron transitions between the highest p energy states of halogens (I, Br, and Cl) in the VB and the lowest 5p energy states of tin in the CB. shows superior optical characteristics, surpassing and , and demonstrating more effective absorption within the visible spectrum than . Subsequently, a numerical analysis is conducted for a P–I–N configuration Fluorine doped Tin Oxide (FTO)////Anode using SCAPS‐1D software. The optimization process focuses on absorber thickness, defect density, acceptor density, and the work function (WF) of the anode materials. Simulation findings recommend a defect density () of for optimal performance, coupled with an absorber thickness of 1 µm. Examining the transformation from to through oxidation reveals that reducing the concentration of acceptors in the absorber layer (NA) significantly enhances device performance. Superior performance is achieved by a high WF anode material. This study not only contributes to advancing our understanding of lead‐free perovskite optoelectronics but also provides valuable insights for the development of highly efficient and stable solar cells.

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Enhance stability of γ-CsSnI3-based PSCs by (γ-CsSnI3-Cs2SnI6) heterojunction

Cited by 11 publications

References 72 publications

Correlation between defect properties and the performance of eco-friendly CsSnI₃-based perovskite solar cells

Correlation between defect properties and the performance of eco-friendly CsSnI₃-based perovskite solar cells

Insight into the Microband Offset and Charge Transport Layer’s Suitability for an Efficient Inverted Perovskite Solar Cell: A Case Study for Tin-Based B-γ-CsSnI₃

CH3NH3SnI3${\mathrm{CH}}_{\mathrm{3}}{\mathrm{NH}}_{\mathrm{3}}{\mathrm{SnI}}_{\mathrm{3}}$: Superior Light Absorption and Optimized Device Architecture with 31.93% Efficiency

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Enhance stability of γ-CsSnI3-based PSCs by (γ-CsSnI3-Cs2SnI6) heterojunction

Cited by 11 publications

References 72 publications

Correlation between defect properties and the performance of eco-friendly CsSnI3-based perovskite solar cells

Correlation between defect properties and the performance of eco-friendly CsSnI3-based perovskite solar cells

Insight into the Microband Offset and Charge Transport Layer’s Suitability for an Efficient Inverted Perovskite Solar Cell: A Case Study for Tin-Based B-γ-CsSnI3

CH3NH3SnI3${\mathrm{CH}}_{\mathrm{3}}{\mathrm{NH}}_{\mathrm{3}}{\mathrm{SnI}}_{\mathrm{3}}$: Superior Light Absorption and Optimized Device Architecture with 31.93% Efficiency

Contact Info

Product

Resources

About

Correlation between defect properties and the performance of eco-friendly CsSnI₃-based perovskite solar cells

Correlation between defect properties and the performance of eco-friendly CsSnI₃-based perovskite solar cells

Insight into the Microband Offset and Charge Transport Layer’s Suitability for an Efficient Inverted Perovskite Solar Cell: A Case Study for Tin-Based B-γ-CsSnI₃