Interfacial Engineering of Wide‐Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells

Wang, Deng; Guo, Hongling; Wu, Xin; Deng, Xiang; Li, Fengzhu; Li, Zhen; Lin, Francis; Zhu, Zonglong; Zhang, Yi; Xu, Baomin; Jen, Alex K.‐Y.

doi:10.1002/adfm.202107359

Cited by 56 publications

(58 citation statements)

References 60 publications

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“…[2] It is well known that efficient PVSCs require effective suppression of the nonradiative recombination that often originates from nonideal interface energy alignment as well as defects states. [8][9][10][11][12] Charge-transporting materials modification, surface defects passivation, and dimensional engineering are the most adopted strategies to suppress the nonideal interfacial recombination and reduce the energy losses in PVSCs. [13][14][15][16][17][18][19] Among them, the defects at the grain boundaries of 3D perovskite can act as recombination and trapstate centers for minority carriers, which are always considered detrimental to performance.…”

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confidence: 99%

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)₄AgBiBr₈ Nanosheets

Zhao

Gao

et al. 2022

Advanced Materials

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realized, PVSCs can rival the commercialized silicon solar cells and copper indium gallium selenide (CIGS) solar cells. [2] It is well known that efficient PVSCs require effective suppression of the nonradiative recombination that often originates from nonideal interface energy alignment as well as defects states. [8][9][10][11][12] Charge-transporting materials modification, surface defects passivation, and dimensional engineering are the most adopted strategies to suppress the nonideal interfacial recombination and reduce the energy losses in PVSCs. [13][14][15][16][17][18][19] Among them, the defects at the grain boundaries of 3D perovskite can act as recombination and trapstate centers for minority carriers, which are always considered detrimental to performance. [20] Therefore, the 3D/2D heterojunction architecture stands out as it can simultaneously passivate defects at grain boundaries, modify the interfacial energy alignment, and suppress the ion diffusion, thereby enhancing the device performance and long-term stability. [21][22][23][24][25][26] Currently, most 3D/2D heterostructures are contrived via the modification of perovskite precursor solutions or post-treatment of 3D perovskites. [5,[27][28][29][30][31][32][33][34] For example, Snaith et al. blended butylammonium-based 2D perovskite precursor solution with the cesium formamidinium lead halide perovskite solution to form a mixture of 2D and 3D-phase perovskite, which effectively inhibited nonradiative Perovskite solar cells (PVSCs) have drawn great attention due to their high processability and superior photovoltaic properties. However, their further development is often hindered by severe nonradiative recombination at interfaces that decreases power conversion efficiency (PCE). To this end, a facile strategy to construct a 3D/2D vertical heterostructure to reduce the energy loss in PVSCs is developed. The heterostructure is contrived through the van der Waals integration of 2D perovskite ((BA) 4 AgBiBr 8 ) nanosheets onto the surface of 3D-FAPbI 3 -based perovskites. The large bandgap of (BA) 4 AgBiBr 8 enables the formation of type-I heterojunction with 3D-FAPbI 3 -based perovskites, which serves as a barrier to suppress the trap-assisted recombination at the interface. As a result, a satisfying PCE of 24.48% is achieved with an improved open-circuit voltage (V OC ) from 1.13 to 1.17 V. Moreover, the 2D perovskite nanosheets can effectively mitigate the iodide ion diffusion from perovskite to the metal electrode, hence enhancing the device stability. 3D/2D architectured devices retain ≈90% of their initial PCE under continuous illumination or heating after 1000 h, which are superior to 3D-based devices. This work provides an effective and controllable strategy to construct 3D/2D vertical heterostructure to simultaneously boost the efficiency and stability of PVSCs.

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confidence: 99%

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)₄AgBiBr₈ Nanosheets

Zhao

Gao

et al. 2022

Advanced Materials

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“…Interfacial recombination can be a severely degrading performance issue, but some methods are used to inhibit this. In [193], a 2D octyl-diammonium lead iodide interlayer was used to decrease recombination losses and obtain a PCE of 22.27% in tandem solar cells. A 2D/3D perovskite interface in [194] suppressed interface losses with a PCE ≈ 21%.…”

Section: Commercializationmentioning

confidence: 99%

Hybrid Organic–Inorganic Perovskite Halide Materials for Photovoltaics towards Their Commercialization

et al. 2022

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Hybrid organic–inorganic perovskite (HOIP) photovoltaics have emerged as a promising new technology for the next generation of photovoltaics since their first development 10 years ago, and show a high-power conversion efficiency (PCE) of about 29.3%. The power-conversion efficiency of these perovskite photovoltaics depends on the base materials used in their development, and methylammonium lead iodide is generally used as the main component. Perovskite materials have been further explored to increase their efficiency, as they are cheaper and easier to fabricate than silicon photovoltaics, which will lead to better commercialization. Even with these advantages, perovskite photovoltaics have a few drawbacks, such as their stability when in contact with heat and humidity, which pales in comparison to the 25-year stability of silicon, even with improvements are made when exploring new materials. To expand the benefits and address the drawbacks of perovskite photovoltaics, perovskite–silicon tandem photovoltaics have been suggested as a solution in the commercialization of perovskite photovoltaics. This tandem photovoltaic results in an increased PCE value by presenting a better total absorption wavelength for both perovskite and silicon photovoltaics. In this work, we summarized the advances in HOIP photovoltaics in the contact of new material developments, enhanced device fabrication, and innovative approaches to the commercialization of large-scale devices.

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“…Kesterite Cu 2 ZnSn(S,Se) 4 (CZTSSe) has been continuously studied in recent years to overcome the limitations of Cu(In,Ga)Se 2 (CIGS), which consumes rare elements. CZTSSe has the advantages of optimal bandgap (1.0–1.5 eV), high absorption coefficient (>10 4 cm −1 ), and non-toxicity [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. However, the power conversion efficiency (PCE) of the CZTSSe solar cells is still lower (13%) than those of competitors such as CIGS (23.35%) [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

The Role of the Graphene Oxide (GO) and Reduced Graphene Oxide (RGO) Intermediate Layer in CZTSSe Thin-Film Solar Cells

Park

2022

Materials

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Cu2ZnSn(S,Se)4 (CZTSSe) solar cells with low cost and eco-friendly characteristics are attractive as future sources of electricity generation, but low conversion efficiency remains an issue. To improve conversion efficiency, a method of inserting intermediate layers between the CZTSSe absorber film and the Mo back contact is used to suppress the formation of MoSe2 and decomposition of CZTSSe. Among the candidates for the intermediate layer, graphene oxide (GO) and reduced GO have excellent properties, including high-charge mobility and low processing cost. Depending on the type of GO, the solar cell parameters, such as fill factor (FF), were enhanced. Thus, the conversion efficiency of 6.3% was achieved using the chemically reduced GO intermediate layer with significantly improved FF.

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Interfacial Engineering of Wide‐Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells

Cited by 56 publications

References 60 publications

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)₄AgBiBr₈ Nanosheets

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)₄AgBiBr₈ Nanosheets

Hybrid Organic–Inorganic Perovskite Halide Materials for Photovoltaics towards Their Commercialization

The Role of the Graphene Oxide (GO) and Reduced Graphene Oxide (RGO) Intermediate Layer in CZTSSe Thin-Film Solar Cells

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Interfacial Engineering of Wide‐Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells

Cited by 56 publications

References 60 publications

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)4AgBiBr8 Nanosheets

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)4AgBiBr8 Nanosheets

Hybrid Organic–Inorganic Perovskite Halide Materials for Photovoltaics towards Their Commercialization

The Role of the Graphene Oxide (GO) and Reduced Graphene Oxide (RGO) Intermediate Layer in CZTSSe Thin-Film Solar Cells

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Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)₄AgBiBr₈ Nanosheets

Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)₄AgBiBr₈ Nanosheets