Minimized surface deficiency on wide-bandgap perovskite for efficient indoor photovoltaics

Li, Zhen; Zhang, Jie; Wu, Shengfan; Deng, Xiang; Li, Fengzhu; Liu, Danjun; Lee, Chia‐Chen; Lin, Francis; Lei, Dangyuan; Chueh, Chu‐Chen; Zhu, Zonglong; Jen, Alex K.‐Y.

doi:10.1016/j.nanoen.2020.105377

Cited by 83 publications

(82 citation statements)

References 53 publications

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“…Indeed, our previous study demonstrated that the Br ion was introduced during the antisolvent process that it has a chance to penetrate into the bulk to passivate the trap defects, [ 8 ] whereas PEA + cation participated in the recrystallization process can effectively passivate the surface trap defects. [ 31,32 ] The decrease in the trap density is consistent with the enhanced crystallinity and enlarged grain size.…”

Section: Resultsmentioning

confidence: 61%

Dual Passivation Strategy for High Efficiency Inorganic CsPbI₂Br Solar Cells

Huang

Liu

et al. 2021

Solar RRL

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Inorganic metal halide perovskite solar cells have achieved incredible progress in recent years. However, the power conversion efficiency of the inorganic perovskite solar cells is still low compared with their hybrid counterparts due to the inescapable nonradiative losses from the charge recombination. Herein, a strategy is demonstrated to minimize the nonradiative recombination loss in CsPbI2Br solar cells by establishing a synergetic passivation from the mutual effect of alkali‐ and alkylammonium‐salt. Accordingly, a sequential passivation process employing KBr and phenethylammonium chloride overcomes their limited passivation effect in one single step. This dual passivation is beneficial to an improved CsPbI2Br film with reduced trap defects, enlarged grain size, as well as to form an ultrathin low‐dimensional perovskite surface layer. As a result, a very high power conversion efficiency of 16.9% is obtained for inorganic CsPbI2Br solar cells. The proposed dual passivation scheme provides a feasible route not only for the design of high‐efficiency perovskite solar cells but also for other perovskite‐related optoelectronic devices.

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Section: Resultsmentioning

confidence: 61%

Dual Passivation Strategy for High Efficiency Inorganic CsPbI₂Br Solar Cells

Huang

Liu

et al. 2021

Solar RRL

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“…Next to dual passivation by PEACl, we first evaluated the effect on the V OC upon employing PEAI and PEABr, since they have been used in numerous previous reports for passivation of perovskite films. 62,65,69,77,99,103 As shown in Fig. S8, PEACl-based GBP&SP PSCs show a much higher average of V OC of ~1.15 V as compared to ~1.12 V in case of PEAI and PEABr.…”

Section: Photovoltaic Performancementioning

confidence: 92%

“…S20). 59,60,62,64,65,90 Further analysis of atomic force microscopy (AFM) images reveals a slight reduction in the root-mean-square surface roughness, which we attribute to the fact that PEACl preferentially fills regions close to the grain boundaries (Fig. S21).…”

Section: Photophysical Propertiesmentioning

confidence: 96%

Two birds with one stone: dual grain-boundary and interface passivation enables >22% efficient inverted methylammonium-free perovskite solar cells

Gharibzadeh

Faßl

Hossain

et al. 2021

Energy Environ. Sci.

219

205

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“…The usage of metal oxides and carbon‐based electrodes were shown to reduce these effects. [ 210,213 ] Moreover, according to a recent study, [ 87 ] when using phenethyl ammonium halides (like PEACl) as surface passivation agents on top of the photoactive material (here: CsFAMA), light‐induced phase segregation gets inhibited within the perovskite, but also the perovskite surface and perovskite/ETL interface get passivated thus become protected from defect‐originated degradation.…”

Section: Critical Parameters Under Low Light Environmentmentioning

confidence: 99%

Indoor Perovskite Photovoltaics for the Internet of Things—Challenges and Opportunities toward Market Uptake

Polyzoidis

Rogdakis

Kymakis

2021

Advanced Energy Materials

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The high‐power conversion efficiency of flexible perovskite photovoltaics (PPV) at low light environment and their low‐cost manufacturing processes, render PPV superior to conventional rigid photovoltaics targeting indoor applications. However, various parameters related to materials, architecture, processing, and indoor characterization need to be optimized further toward improving indoor PPV (iPPV) efficiency, stability, and ecotoxicity. This work provides an overview of the recent progress, trends, and challenges in the field and suggests a holistic approach toward a viable design and integration of iPPVs into Internet of Things (IoT) platforms without any compromise on safety and cost effectiveness. The key impact of selecting proper materials and fabrication techniques, as well as optimizing the active area and architecture is described. Certain peculiarities of the indoor lighting conditions are discussed that can be addressed by proper simulation tools, including the understanding of the charge‐transfer mechanism, the diversification of the lamp types, as well as identifying the requirements for the production, standardization, and installation of iPPVs associated with IoT devices. A multidimensional engineering approach that considers aspects of architecture, light technology, load specifications, materials, processing, safety and cost, is proposed as a path toward accelerating iPPV market uptake for households, businesses, wearables and Industry 4.0 applications.

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Minimized surface deficiency on wide-bandgap perovskite for efficient indoor photovoltaics

Cited by 83 publications

References 53 publications

Dual Passivation Strategy for High Efficiency Inorganic CsPbI₂Br Solar Cells

Dual Passivation Strategy for High Efficiency Inorganic CsPbI₂Br Solar Cells

Two birds with one stone: dual grain-boundary and interface passivation enables >22% efficient inverted methylammonium-free perovskite solar cells

Indoor Perovskite Photovoltaics for the Internet of Things—Challenges and Opportunities toward Market Uptake

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Minimized surface deficiency on wide-bandgap perovskite for efficient indoor photovoltaics

Cited by 83 publications

References 53 publications

Dual Passivation Strategy for High Efficiency Inorganic CsPbI2Br Solar Cells

Dual Passivation Strategy for High Efficiency Inorganic CsPbI2Br Solar Cells

Two birds with one stone: dual grain-boundary and interface passivation enables >22% efficient inverted methylammonium-free perovskite solar cells

Indoor Perovskite Photovoltaics for the Internet of Things—Challenges and Opportunities toward Market Uptake

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Product

Resources

About

Dual Passivation Strategy for High Efficiency Inorganic CsPbI₂Br Solar Cells

Dual Passivation Strategy for High Efficiency Inorganic CsPbI₂Br Solar Cells