Boosted hole extraction in all-inorganic CsPbBr3 perovskite solar cells by interface engineering using MoO2/N-doped carbon nanospheres composite

Zong, Zhihao; He, Benlin; Zhu, Jingwei; Ding, Yang; Zhang, Wenyu; Duan, Jialong; Zhao, Yuanyuan; Chen, Haiyan; Tang, Qunwei

doi:10.1016/j.solmat.2020.110460

Cited by 28 publications

(16 citation statements)

References 42 publications

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“…Two potential strategies, i.e., doping engineering and quantization, are promising to overcome the challenges of phase transition and water intrusion. [ 115 ] Fortunately, these progresses can be directly incorporated into the integrated system, and PSCs are expected to be commercialized with further efforts.…”

Section: Overall Critical Challengesmentioning

confidence: 99%

A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

Zhang

Song

et al. 2021

Advanced Science

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With the remarkable progress of photovoltaic technology, next-generation perovskite solar cells (PSCs) have drawn significant attention from both industry and academic community due to sustainable energy production. The single-junction-cell power conversion efficiency (PCE) of PSCs to date has reached up to 25.2%, which is competitive to that of commercial silicon-based solar cells. Currently, solar cells are considered as the individual devices for energy conversion, while a series connection with an energy storage device would largely undermine the energy utilization efficiency and peak power output of the entire system. For substantially addressing such critical issue, advanced technology based on photovoltaic energy conversion-storage integration appears as a promising strategy to achieve the goal. However, there are still great challenges in integrating and engineering between energy harvesting and storage devices. In this review, the state-of-the-art of representative integrated energy conversion-storage systems is initially summarized. The key parameters including configuration design and integration strategies are subsequently analyzed. According to recent progress, the efforts toward addressing the current challenges and critical issues are highlighted, with expectation of achieving practical integrated energy conversion-storage systems in the future.

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Section: Overall Critical Challengesmentioning

confidence: 99%

A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

Zhang

Song

et al. 2021

Advanced Science

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“…17 Later, Tang et al introduced a modified carbon nanosphere composite into carbon-based CsPbBr 3 PSCs as a hole transport material to enhance energy level alignment and charge extraction and passivate surface defects, thus achieving an optimized efficiency of 9.40%. 18 Furthermore, the Sm 3+doped all-inorganic PSCs using Cu(Cr,Ba)O 2 as an HTL showed enhanced hole extraction and transporting characteristics and achieved an optimized efficiency of 10.79%. 19 Recently, researchers restrained the undercoordinated Pb 2+ by incorporating Ti 3 C 2 Cl x , thereby releasing the superficial lattice tensile strain and passivating the defects, ultimately refreshing the record efficiency as high as 11.08% with an ultrahigh V oc of up to 1.702 V. 20 However, the champion efficiency of CsPbBr 3 PSC devices based on the physical vapor deposition (PVD) method is still stagnant owing to the relatively high defect density in polycrystalline materials.…”

Section: ■ Introductionmentioning

confidence: 97%

Defect Passivation and Fermi Level Modification for >10% Evaporated All-Inorganic CsPbBr₃ Perovskite Solar Cells

Liu

Xiang

Zhang

et al. 2022

ACS Appl. Energy Mater.

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Current CsPbBr 3 perovskite solar cells still suffer from a high open-circuit voltage (V oc ) loss due to the high defect density. Herein, we demonstrate a strategy to passivate defects and induce Fermi level modification through BaI 2 doping. The carrier lifetime is significantly extended after adding BaI 2 . In addition, the Fermi level is changed as Ba 2+ enters the crystal lattice, which increases the built-in potential and promotes the transport of carriers. As a result, the optimized thermally evaporated device shows a record V oc of 1.551 V and an improved power conversion efficiency of 10.09% as well as excellent thermal stability.

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“…In general, the main reason behind the sluggish efficiency is attributed to the inherent narrow-spectra response ranges of CsPbBr 3 perovskite and the substantial carrier recombination resulting from multitudinous inevitable imperfections and mismatching energy band alignment within PSCs. [11][12][13] Therefore, considerable efforts have been accordingly made to solve the aforementioned issues to attain high efficiency and stability of carbon-based all-inorganic CsPbBr 3 PSCs.…”

Section: Introductionmentioning

confidence: 99%

Tri‐Brominated Perovskite Film Management and Multiple‐Ionic Defect Passivation for Highly Efficient and Stable Solar Cells

Gong

Zhu

et al. 2021

Solar RRL

Self Cite

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High‐quality perovskite films with low imperfections, high hole mobility, and matching energy levels play a crucial role in enhancing performance of perovskite solar cells (PSCs) without hole‐transporting materials (HTMs). Herein, it is demonstrated that the incorporation of a stable tetra‐bisphenol A (TBBPA) with diphenyl ring, polybromides, and hydroxyl groups additive into a perovskite film can simultaneously manipulate the crystal growth and passivate the defects through coordination interaction between the functional group (OH, Br) and the unsaturated halogen and metal ions (Br−, Cs+, and Pb2+), resulting in a reduced grain boundary as well as imperfection and increased hole mobility of the CsPbBr3 perovskite film. In addition, the valence band of a perovskite film with TBBPA additive is shifted upward to approach the work function of the carbon electrode, thereby improving the energy level alignment. Consequently, a significantly boosted charge extraction and reduced charge recombination of the carbon‐based HTM‐free CsPbBr3 PSCs is obtained after incorporating the TBBPA additive, yielding a maximum power conversion efficiency of up to 9.82% of the optimized device. Furthermore, the champion PSC without encapsulation displays a remarkable thermal and moisture stability after being kept in ambient air for 720 h at 85 °C and 85% relative humidity, respectively.

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Boosted hole extraction in all-inorganic CsPbBr3 perovskite solar cells by interface engineering using MoO2/N-doped carbon nanospheres composite

Cited by 28 publications

References 42 publications

A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

Defect Passivation and Fermi Level Modification for >10% Evaporated All-Inorganic CsPbBr₃ Perovskite Solar Cells

Tri‐Brominated Perovskite Film Management and Multiple‐Ionic Defect Passivation for Highly Efficient and Stable Solar Cells

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Boosted hole extraction in all-inorganic CsPbBr3 perovskite solar cells by interface engineering using MoO2/N-doped carbon nanospheres composite

Cited by 28 publications

References 42 publications

A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

Defect Passivation and Fermi Level Modification for >10% Evaporated All-Inorganic CsPbBr3 Perovskite Solar Cells

Tri‐Brominated Perovskite Film Management and Multiple‐Ionic Defect Passivation for Highly Efficient and Stable Solar Cells

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Product

Resources

About

Defect Passivation and Fermi Level Modification for >10% Evaporated All-Inorganic CsPbBr₃ Perovskite Solar Cells