Wide‐Gap Perovskite via Synergetic Surface Passivation and Its Application toward Efficient Stacked Tandem Photovoltaics

Huang, Tianyi; Wang, Rui; Nuryyeva, Selbi; Tan, Shaun; Xue, Jingjing; Zhao, Yepin; Wu, Quantan; Weber, Marc H.; Cheng, Pei; Meng, Dong; Yavuz, İlhan; Houk, K. N.; Yang, Yang

doi:10.1002/smll.202103887

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…For the Br-rich WBG perovskites, the light-induced phase segregation primarily originates from the ionic migration via halide vacancies, which mainly occurs at grain boundaries and film surface [220][221][222]. McGehe et al studied the relationship between the surface modification and lightinduced halide segregation by introducing trioctylphosphine oxide (TOPO) onto CH 3 NH 3 PbI 2 Br [223].…”

Section: Interface Engineeringmentioning

confidence: 99%

Recent Advances in Wide-Bandgap Organic–Inorganic Halide Perovskite Solar Cells and Tandem Application

et al. 2023

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Perovskite-based tandem solar cells have attracted increasing interest because of its great potential to surpass the Shockley–Queisser limit set for single-junction solar cells. In the tandem architectures, the wide-bandgap (WBG) perovskites act as the front absorber to offer higher open-circuit voltage (VOC) for reduced thermalization losses. Taking advantage of tunable bandgap of the perovskite materials, the WBG perovskites can be easily obtained by substituting halide iodine with bromine, and substituting organic ions FA and MA with Cs. To date, the most concerned issues for the WBG perovskite solar cells (PSCs) are huge VOC deficit and severe photo-induced phase separation. Reducing VOC loss and improving photostability of the WBG PSCs are crucial for further efficiency breakthrough. Recently, scientists have made great efforts to overcome these key issues with tremendous progresses. In this review, we first summarize the recent progress of WBG perovskites from the aspects of compositions, additives, charge transport layers, interfaces and preparation methods. The key factors affecting efficiency and stability are then carefully discussed, which would provide decent guidance to develop highly efficient and stable WBG PSCs for tandem application.

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Section: Interface Engineeringmentioning

confidence: 99%

Recent Advances in Wide-Bandgap Organic–Inorganic Halide Perovskite Solar Cells and Tandem Application

et al. 2023

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“…Similar to 3T TSCs, 4T TSCs require new module designs, such as a module consisting of two independent top (transparent) and bottom modules. Therefore, extremely large variety of 4T TSCs are reported: PVSK/PVSK, [44] III-V/Si, [45,46] PVSK/Si, [47,48] PVSK/CIGS, [48,49] PVSK/CZTS, [50] etc. In 4T TSCs, two electrical contacts of each subcell (i.e., four contacts overall) can be freely connected to become equivalent to any of the 2T or 3T configurations.…”

Section:  T Tscsmentioning

confidence: 99%

Characterization of various tandem solar cells: Protocols, issues, and precautions

Park

Hwang

et al. 2023

Exploration

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In the search for a more efficient solar cell, various types of tandem solar cells (TSCs) have been actively developed worldwide as the performances of the single junction solar cells approach their theoretical limits. Meanwhile, various materials and structures are adopted in TSCs, which makes their characterizations and comparison difficult. Along with the classical monolithic TSC, which exhibits two electrical contacts, devices with three or four electrical contacts have been widely studied as a more performing alternative of commercialized solar cells. For a fair and accurate evaluation of the device performance of TSCs, understanding the effectiveness and limitations of the characterization of the different types of TSCs is crucial. In this paper, we summarize various types of TSCs and discuss their characterization methods.

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Dual interface strategies enable efficient wide bandgap perovskite solar cells

Hou,

Guo,

Yang

et al. 2024

Applied Physics Letters

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High performance wide bandgap perovskite solar cells (WB-PSCs) have found widespread applications in tandem solar cells. In WB-PSCs, achieving a high conversion efficiency relies on the effective utilization of light absorption and minimization of electronic defects. In this work, electronic defects at the surface and grain boundaries of perovskite materials have been passivated by n-butylammonium bromide (BABr) to suppress carrier non-radiative recombination. Confirmed through x-ray powder diffraction and x-ray photoelectron spectroscopy spectra, ultra-thin two-dimensional (2D) perovskite layers were successfully generated on a perovskite surface. The BABr-treated devices exhibited an increased fill factor and open circuit voltage (VOC) compared to the references. Furthermore, a nanotextured electrode with a roughness of 22.98 nm was employed to trap light. The nanotextured buried interface not only promoted light utilization but also alleviated residual stress and micro-strain in the perovskite film compared to the smooth substrate. Finally, the champion WB-PSC achieved a power conversion efficiency of 20.46% in the reverse scan. These findings pave a promising path for the development of solution-processed perovskite films on nanotextured silicon substrates to improve the performance of monolithic tandem solar cells.

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Wide‐Gap Perovskite via Synergetic Surface Passivation and Its Application toward Efficient Stacked Tandem Photovoltaics

Cited by 3 publications

References 40 publications

Recent Advances in Wide-Bandgap Organic–Inorganic Halide Perovskite Solar Cells and Tandem Application

Recent Advances in Wide-Bandgap Organic–Inorganic Halide Perovskite Solar Cells and Tandem Application

Characterization of various tandem solar cells: Protocols, issues, and precautions

Dual interface strategies enable efficient wide bandgap perovskite solar cells

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