Thermal residual stresses in silicon thin film solar cells under operational cyclic thermal loading: A finite element analysis

Namvar, Arman; Dehghany, M.; Sohrabpour, Saeed; Naghdabadi, R.

doi:10.1016/j.solener.2016.05.058

Cited by 16 publications

(4 citation statements)

References 31 publications

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“…Residual stress within the film is detrimental to the performance and stability of the device. , To analyze residual strain, we employed the grazing incidence X-ray diffraction (GIXRD) technique with various grazing incident angles ω. , With ω increasing, the peak of the control perovskite film moved sequentially in the low-angle direction (Figure k,l). Subsequently, we calculated the lattice spacing d , and observed obvious changes in d for the control film (Figure m), indicating the presence of non-negligible tensile stress within the perovskite film.…”

mentioning

confidence: 99%

Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Yang,

Li,

Gong

et al. 2023

Nano Lett.

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Defects in the electron transport layer (ETL), perovskite, and buried interface will result in considerable nonradiative recombination. Here, a bottom-up bilateral modification strategy is proposed by incorporating arsenazo III (AA), a chromogenic agent for metal ions, to regulate SnO 2 nanoparticles. AA can complex with uncoordinated Sn 4+ /Pb 2+ in the form of multidentate chelation. Furthermore, by forming a hydrogen bond with formamidinium (FA), AA can suppress FA + defects and regulate crystallization. Multiple chemical bonds between AA and functional layers are established, synergistically preventing the agglomeration of SnO 2 nanoparticles, enhancing carrier transport dynamics, passivating bilateral defects, releasing tensile stress, and promoting the crystallization of perovskite. Ultimately, the AA-optimized power conversion efficiency (PCE) of the methylammonium-free (MA-free) devices (Rb 0.02 (FA 0.95 Cs 0.05 ) 0.98 PbI 2.91 Br 0.03 Cl 0.06 ) is boosted from 20.88% to 23.17% with a high open-circuit voltage (V OC ) exceeding 1.18 V and ultralow energy losses down to 0.37 eV. In addition, the optimized devices also exhibit superior stability.

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mentioning

confidence: 99%

Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Yang,

Li,

Gong

et al. 2023

Nano Lett.

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“…[27,28] It is reported that the residual strain may come from external stimuli during PSCs preparation and the mismatch of thermal expansion coefficient at buried interface (TiO 2 /perovskite film). [29][30][31] To investigate the residual strain present in perovskite films on both TiO 2 and TiO 2 -CSBA, we employed depth-resolved grazing incidence X-ray diffraction (GIXRD) technology. [32,33] As exhibited in Figure 3d,e, by varying 𝜔 (the grazing incidence angle) from 0.5°to 1.3°, the scattering peaks of (100) plane in TiO 2perovskite film gradually shift toward a smaller angle.…”

Section: Strain Relaxation Of Perovskite Filmmentioning

confidence: 99%

Oriented Molecular Bridge Constructs Homogeneous Buried Interface for Perovskite Solar Cells with Efficiency Over 25.3%

Wang,

Huang,

Wang

et al. 2024

Advanced Materials

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Buried interface optimization matters the efficiency improvement of planar perovskite solar cells (PSCs), and the molecular bridge is reported to be an effective approach. Herein, a molecular bridge is constructed at buried interface using 4‐chloro‐3‐sulfamoylbenzoic acid (CSBA), and its preferred arrangement is systematically investigated. It is elucidated that the CSBA molecular is prone to be orientationally absorbed on TiO2 surface through COOH–Ti, and then connect with perovskite through S═O–Pb, resulting in a feasible oriented molecular bridge. Contributing to the passivated interfacial defects, optimized interfacial energy level, and released perovskite tensile stress, resulting from the oriented CSBA molecular bridge, the PSCs with an active area of 0.08 cm2 achieve a certified power conversion efficiency (PCE) of 25.32%, the highest among the TiO2‐based planar PSCs. Encouragingly, the PSCs with an active area of 1 cm2 achieve a champion PCE of 24.20%, significantly promoting the efficiency progress of large‐area PSCs. In addition, the PSCs with oriented CSBA molecular bridge possess enhanced stability, the unencapsulated PSCs can maintain ≈91% and ≈85% of their initial PCE after 3000 h aging under ambient condition and 1200 h aging under exposure to UV irradiation.

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“…[ 71 ] The second reason is the internal stress resulting from the differences in lattice structures of different materials. [ 70 ] To further enhance the efficiency of FCSs, it is imperative to find a way to release residual stress.…”

Section: Residual Stress In Flexible Devicesmentioning

confidence: 99%

“…The current conversion efficiency of FCSs is still lower than the theoretical limit. The main reasons are generally attributed to 1) the intrinsic properties of flexible substrate materials, such as diffusion of harmful impurities and substrate stability; 2) the internal stress in flexible devices; [ 70,71 ] 3) the high density of defects in the CZTSSe films; [ 31,72–79 ] and 4) the carrier recombination at the interface. [ 80–82 ] In this article, we focus on the earlier problems and introduce the corresponding solutions to explore feasible strategies for the fabrication of high‐efficient flexible CZTSSe devices.…”

Section: Introductionmentioning

confidence: 99%

A Progress Review on Challenges and Strategies of Flexible Cu₂ZnSn(S, Se)₄ Solar Cells

et al. 2023

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Flexible Cu2ZnSn(S, Se)4 (CZTSSe) solar cells have the advantages of nontoxicity and low cost, showing great commercial potential in wearable devices, indoor photovoltaics, and building‐integrated photovoltaics. Currently, the performances of flexible CZTSSe devices still faces a huge gap on the commercialization level. Herein, the development of flexible CZTSSe devices to provide the challenges is summarized and possible strategies are explored. During the past ten years of research, flexible CZTSSe devices’ efficiency has increased to 11.19% through studies of flexible substrates, residual stress, deposition processes, and physics. However, the improvement of efficiency is facing large challenges in severe open‐circuit voltage loss and low fill factor. After solving the issues by the strategies of deep‐level defect passivation and interface optimization, the efficiency of flexible CZTSSe solar cells is expected to reach the commercial level.

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Thermal residual stresses in silicon thin film solar cells under operational cyclic thermal loading: A finite element analysis

Cited by 16 publications

References 31 publications

Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Oriented Molecular Bridge Constructs Homogeneous Buried Interface for Perovskite Solar Cells with Efficiency Over 25.3%

A Progress Review on Challenges and Strategies of Flexible Cu₂ZnSn(S, Se)₄ Solar Cells

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Thermal residual stresses in silicon thin film solar cells under operational cyclic thermal loading: A finite element analysis

Cited by 16 publications

References 31 publications

Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Multidentate Chelation Achieves Bilateral Passivation toward Efficient and Stable Perovskite Solar Cells with Minimized Energy Losses

Oriented Molecular Bridge Constructs Homogeneous Buried Interface for Perovskite Solar Cells with Efficiency Over 25.3%

A Progress Review on Challenges and Strategies of Flexible Cu2ZnSn(S, Se)4 Solar Cells

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A Progress Review on Challenges and Strategies of Flexible Cu₂ZnSn(S, Se)₄ Solar Cells