Highly Efficient and Stable Planar Perovskite Solar Cells with Modulated Diffusion Passivation Toward High Power Conversion Efficiency and Ultrahigh Fill Factor

Zhang, Long; Lin, Zhenhua; Ning, Zhijun; Li, Tao; Guo, Xing; Ma, Jing; Su, Jie; Zhang, Chunfu; Liu, Shengzhong; Hao, Yue

doi:10.1002/solr.201900293

Cited by 94 publications

(81 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, solar cells based on halide perovskites have developed rapidly with their power conversion efficiency (PCE) reaching a record of 25.2%, which is far beyond the threshold of solar cells commercialization. Thus, perovskite solar cells (PSCs) have been considered as new photovoltaic materials for next‐generation energy technology . In addition, organic–inorganic perovskites have been widely used in light‐emitting diodes (LEDs), photodetectors, and transistors due to their efficient ambipolar transport and striking light absorption properties .…”

Section: Introductionmentioning

confidence: 99%

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Zhang

Lin

et al. 2020

Solar RRL

Self Cite

View full text Add to dashboard Cite

All‐inorganic perovskite CsPbI2Br have been regarded as a promising candidate to tackle the thermal instability issue of organic–inorganic perovskite solar cells. However, the serious interfacial charge recombination and large voltage potential loss in cells circumscribe their performance and commercialization. Herein, a facile approach is demonstrated in which the SnO2 electron transport layer is modified with short‐period deep‐ultraviolet (DUV) photoactivation process to decrease the work function and achieve better energy alignment with the conduction band of perovskites. Such modification triggers efficient charge transfer and reduces the charge recombination. Moreover, first‐principles calculation further demonstrates that DUV‐treated SnO2 can strengthen the interface interaction, reduce the interface stress caused by lattice mismatch, induce more ordered perovskite structure, enlarge transfer charge from 0.71 to 2.33 e, gain larger built‐in field (from 0.74 to 2.09 eV), lower work function, and smaller conduction band offset. Thus, all‐inorganic CsPbI2Br solar cells based on DUV‐treated SnO2 exhibit a significant enhancement in power conversion efficiency, and the champion cell achieves an elevated efficiency of 15.1% with a superior Voc of 1.22 V and better stability.

show abstract

Section: Introductionmentioning

confidence: 99%

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Zhang

Lin

et al. 2020

Solar RRL

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, great progress has been made in the preparation and application of 2D perovskite materials, such as the simple spin‐coating method to prepare various perovskite films for photovoltaics, photodetectors, and other applications 54–60 . However, the resulting polycrystalline film has a stability problem and is easily eroded by oxygen and humidity (Figure 1B).…”

Section: Introductionmentioning

confidence: 99%

Recent progress of two‐dimensional lead halide perovskite single crystals: Crystal growth, physical properties, and device applications

Chang

Liu

2020

EcoMat

Self Cite

View full text Add to dashboard Cite

In recent years, research on organic‐inorganic lead halide two‐dimensional (2D) perovskites has been blossoming. 2D perovskites have completely different layered structures from three‐dimensional perovskites, with interleaved organic and inorganic layers, leading to 2D perovskite materials being more stable and possessing anisotropic electrical transport. Meanwhile, 2D organic‐inorganic lead halide perovskite single crystals are receiving increasing attention because of their remarkable properties, such as long charge carrier lifetime, low defect density, and high photoluminescence quantum yield, increasing their potential for optoelectronic applications. Previously, a series of material systems based 2D perovskites single crystals has been synthesized and applied in various device applications. In this review, the preparation methods of organic‐inorganic lead halide 2D perovskite single crystals, the growth principles, their photoelectric properties and several device applications are discussed.

show abstract

“…The power conversion efficiency (PCE) of PSCs has soared from 3.7% to 25.2%. [ 1–9 ] The ultrahigh efficiency can be obtained by using organic–inorganic hybrid perovskite materials. However, the most serious problem of them is poor stability owing to heat, oxygen, and moisture sensitive nature.…”

Section: Introductionmentioning

confidence: 99%

All‐Inorganic CsPbI_xBr₃₋_x Perovskite Solar Cells: Crystal Anisotropy Effect

Zhao

Lin

et al. 2020

Advcd Theory and Sims

Self Cite

View full text Add to dashboard Cite

Understanding the crystal anisotropy effect of materials on optical and electrical properties is crucial for further comprehension of the device operating mechanism and device performance improvement. In this study, a detailed theoretical analysis is performed to explore the crystal anisotropy effect on the performance of perovskite solar cells by employing state‐of‐the‐art multiscale simulations connecting from the material (first‐principle theory) to the device (drift‐diffusion model). According to the results obtained from first‐principle calculation, the mobility and absorption coefficient of CsPbIBr2 and CsPbI2Br along the [001] orientation are larger than those along the [100] orientation, suggesting that the transport properties and optical properties along the [001] orientation are superior to those along the [100] orientation. According to the results obtained from the drift‐diffusion model, owing to the superior optical and transport characters along the [001] direction, the optimal power conversion efficiencies (PCEs) of CsPbI2Br (18.88%) and CsPbIBr2 (16.42%) solar cells can be obtained. In addition, the two‐terminal CsPbIxBr3‐x/silicon tandem solar cell is also investigated. By utilizing CsPbIBr2/silicon and CsPbI2Br/silicon tandem structures along the [001] orientation, ultrahigh efficiencies are achieved up to 26.32% and 31.39%, respectively. Therefore, the [001] crystal orientation of CsPbIBr2 and CsPbI2Br is more suitable for further applications of optoelectronic devices.

show abstract

Highly Efficient and Stable Planar Perovskite Solar Cells with Modulated Diffusion Passivation Toward High Power Conversion Efficiency and Ultrahigh Fill Factor

Cited by 94 publications

References 40 publications

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Recent progress of two‐dimensional lead halide perovskite single crystals: Crystal growth, physical properties, and device applications

All‐Inorganic CsPbI_xBr₃₋_x Perovskite Solar Cells: Crystal Anisotropy Effect

Contact Info

Product

Resources

About

Highly Efficient and Stable Planar Perovskite Solar Cells with Modulated Diffusion Passivation Toward High Power Conversion Efficiency and Ultrahigh Fill Factor

Cited by 94 publications

References 40 publications

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI2Br Perovskite Solar Cells

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI2Br Perovskite Solar Cells

Recent progress of two‐dimensional lead halide perovskite single crystals: Crystal growth, physical properties, and device applications

All‐Inorganic CsPbIxBr3−x Perovskite Solar Cells: Crystal Anisotropy Effect

Contact Info

Product

Resources

About

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

Deep‐Ultraviolet Photoactivation‐Assisted Contact Engineering Toward High‐Efficiency and Stable All‐Inorganic CsPbI₂Br Perovskite Solar Cells

All‐Inorganic CsPbI_xBr₃₋_x Perovskite Solar Cells: Crystal Anisotropy Effect