Highly efficient flexible perovskite solar cells with vacuum-assisted low-temperature annealed SnO2 electron transport layer

Li, Xiaoguo; Shi, Zejiao; Behrouznejad, Fatemeh; Hatamvand, Mohammad; Zhang, Xin; Wang, Yaxin; Liu, Fengcai; Wang, Dan; Li, Kai; Dong, Hongliang; Mudasar, Farhan; Wang, Jiao; Yu, Anran; Zhan, Yiqiang

doi:10.1016/j.jechem.2021.09.021

Cited by 38 publications

(34 citation statements)

References 45 publications

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“…With the HADI treatment, the device yields the superior PCE of 22.44%, with V oc of 1.17 V, J sc of 24.64 mA cm −2 , and FF of 78.16%, which are the highest PCE and V oc for flexible PSCs to date (Figure 5c). [7,9,[49][50][51][52][53][54] As shown in Figure S11, Supporting Information, the EQE curves reveal that the HADI-treated device possesses slightly higher EQE response from 450 to 800 nm, corresponding to the higher integrated J sc (24.68 mA cm −2 ) compared with the control device (24.37 mA cm −2 ), which is well-matched with the J sc obtained from the J-V curve. The statistics of photovoltaic parameters (PCE, J sc , V oc , and FF) of the f-PSCs are summarized in Figure 5d and Figure S12, Supporting Information, and all are increased with the HADI treatment.…”

Section: Resultsmentioning

confidence: 99%

Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

et al. 2022

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Flexible perovskite solar cells (f‐PSCs) have attracted great attention because of their unique advantages in lightweight and portable electronics applications. However, their efficiencies are far inferior to those of their rigid counterparts. Herein, a novel histamine diiodate (HADI) is designed based on theoretical study to modify the SnO2/perovskite interface. Systematic experimental results reveal that the HADI serves effectively as a multifunctional agent mainly in three aspects: 1) surface modification to realign the SnO2 conduction band upward to improve interfacial charge extraction; 2) passivating the buried perovskite surface, and 3) bridging between the SnO2 and perovskite layers for effective charge transfer. Consequently, the rigid MA‐free PSCs based on the HADI‐SnO2 electron transport layer (ETL) display not only a high champion power conversion efficiency (PCE) of 24.79% and open‐circuit voltage (VOC) of 1.20 V but also outstanding stability as demonstrated by the PSCs preserving 91% of their initial efficiencies after being exposed to ambient atmosphere for 1200 h without any encapsulation. Furthermore, the solution‐processed HADI‐SnO2 ETL formed at low temperature (100 °C) is utilized in f‐PSCs that achieve a PCE as high as 22.44%, the highest reported PCE for f‐PSCs to date.

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Section: Resultsmentioning

confidence: 99%

Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

et al. 2022

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“…Vacuum science has wide applications in many fields [1][2][3][4][5][6][7], such as semiconductor industry [8,9], aerospace [10,11] and military [12,13]. In semiconductor industry, the growth of pure silicon requires a vacuum environment to reduce molecular contamination, besides, micromachining steps including reactive ion etching (RIE), chemical vapor deposition (CVD) and physical vapor deposition (PVD) also need to be completed under vacuum with a clean environment and reduced molecular interference.…”

Section: Introductionmentioning

confidence: 99%

Overview of the MEMS Pirani Sensors

Zhou

Shi

et al. 2022

Micromachines

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Vacuum equipment has a wide range of applications, and vacuum monitoring in such equipment is necessary in order to meet practical applications. Pirani sensors work by using the effect of air density on the heat conduction of the gas to cause temperature changes in sensitive structures, thus detecting the pressure in the surrounding environment and thus vacuum monitoring. In past decades, MEMS Pirani sensors have received considerable attention and practical applications because of their advances in simple structures, long service life, wide measurement range and high sensitivity. This review systematically summarizes and compares different types of MEMS Pirani sensors. The configuration, material, mechanism, and performance of different types of MEMS Pirani sensors are discussed, including the ones based on thermistors, thermocouples, diodes and surface acoustic wave. Further, the development status of novel Pirani sensors based on functional materials such as nanoporous materials, carbon nanotubes and graphene are investigated, and the possible future development directions for MEMS Pirani sensors are discussed. This review is with the purpose to focus on a generalized knowledge of MEMS Pirani sensors, thus inspiring the investigations on their practical applications.

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“…Yiqiang Zhan et al . 30 prepared the SnO 2 ETL using a vacuum-assisted annealing method. The annealing temperature of the ETL was only 100 °C and the champion devices could achieve a PCE of 20.14%.…”

Section: Introductionmentioning

confidence: 99%

“…Yue Jiang et al 29 prepared SnO 2 quantum dots using a super-rapid and additive-free microwave-assisted reaction process, and the PCE of the assembled devices was as high as 20.24%. Yiqiang Zhan et al 30 prepared the SnO 2 ETL using a vacuum-assisted annealing method. The annealing temperature of the ETL was only 100 1C and the champion devices could achieve a PCE of 20.14%.…”

Section: Introductionmentioning

confidence: 99%

Solvent-assisted preparation of low-temperature SnO₂ electron transport layers for efficient and stable perovskite solar cells made in ambient conditions

Liu

et al. 2022

New J. Chem.

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Highly efficient flexible perovskite solar cells with vacuum-assisted low-temperature annealed SnO2 electron transport layer

Cited by 38 publications

References 45 publications

Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

Overview of the MEMS Pirani Sensors

Solvent-assisted preparation of low-temperature SnO₂ electron transport layers for efficient and stable perovskite solar cells made in ambient conditions

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Highly efficient flexible perovskite solar cells with vacuum-assisted low-temperature annealed SnO2 electron transport layer

Cited by 38 publications

References 45 publications

Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

Overview of the MEMS Pirani Sensors

Solvent-assisted preparation of low-temperature SnO2 electron transport layers for efficient and stable perovskite solar cells made in ambient conditions

Contact Info

Product

Resources

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Solvent-assisted preparation of low-temperature SnO₂ electron transport layers for efficient and stable perovskite solar cells made in ambient conditions