A multifunctional piperidine-based modulator for printable mesoscopic perovskite solar cells

Yang, Jian; Li, Sheng; Du, Jiankang; Xia, Minghao; Xiao, Xufeng; Wang, Wei; Hu, Wenjing; Mei, Anyi; Hu, Yue; Han, Hongwei

doi:10.1016/j.cej.2022.136967

Cited by 20 publications

(16 citation statements)

References 49 publications

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“…The valence band maximum (VBM) was located at 1.12 and 0.93 eV below the Fermi level ( E F ) for the control and SMSI film, respectively. The work functions ( W F ) calculated according to the formula

W_{\text{F}} = h v - E_{\text{cutoff}}

, [ 45 ] where hv = 21.22 eV is the incident photoenergy, are 4.33 and 4.60 eV. Combined with the optical bandgap values, the conduction band (CB) bottom of the control and SMSI perovskite films was determined to be −3.9 and −3.94 eV.…”

Section: Resultsmentioning

confidence: 99%

Methanesulfinate Modifier for Printable Mesoscopic Perovskite Solar Cells with Enhanced Performance

et al. 2023

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High‐performance perovskite solar cells require the modification of grain boundaries in the polycrystalline light absorbing layer and salt modifiers have contributed a lot toward this requirement. Herein, the application of the sodium methanesulfinate (SMSI) as the modifier for the hole‐conductor‐free printable mesoscopic perovskite solar cell (p‐MPSC) with a carbon electrode is reported. It is found that SMSI prevents the oxidization of iodine ions in the precursor and methanesulfinate coordinates more strongly than methanesulfonate with perovskite. The interaction between SMSI and perovskite brings improved crystallinity and reduced defects, and thereby suppresses nonradiative recombination in p‐MPSCs. At the same time, SMSI also shifts the Fermi level of perovskite downward and contributes to an optimized energy‐level alignment for promoted charge injection. By introducing the SMSI modifier, the power conversion efficiency of p‐MPSCs from 16.6% to 18.1% is successfully improved. The research indicates that the methanesulfinate anion is a promising candidate for salt modifier design serving high‐performance PSCs.

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W_{\text{F}} = h v - E_{\text{cutoff}}

Section: Resultsmentioning

confidence: 99%

Methanesulfinate Modifier for Printable Mesoscopic Perovskite Solar Cells with Enhanced Performance

et al. 2023

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“…It can be observed from Figure 5e that the target device with 5% NTM has lower V TFL than the control device, and the defect density of the target and control device calculated from Equation (4) are 8.85 × 10 −20 and 5.9 × 10 −20 cm −3 , respectively, which means that NTM can effectively reduce the defect density of the device. [ 44 ] Furthermore, the effect of NTM on the built‐in field ( V bi ) of the device is evaluated by Mott–Schottky analysis, [ 45 ] and the test results are shown in Figure 5f. By introducing NTM, the V bi of the target device increases from 0.61 to 0.72 V, thereby enhancing the carrier transport inside the device, which contributes to the remarkable improvement in the V OC of the device.…”

Section: Resultsmentioning

confidence: 99%

Comprehensively Improved the Performance of Carbon‐Based Printed Mesoscopic (FA)CsRbPbI₃ Solar Cells by 3‐Pyridine Formamide

et al. 2022

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Excellent stability, low costs, and printability are the most significant features of printable mesoscopic perovskite solar cells (p‐MPSCs). However, the introduction of carbon electrodes reduces the cost of production while causing severe voltage losses within the p‐MPSCs. Herein, formamidine (FA), cesium, and rubidium are selected as A‐site cations (or cationic groups) in perovskite films, and nicotinamide (3‐pyridine formamide, NTM) is introduced as an additive to modify the perovskite films for the preparation of p‐MPSCs. The introduction of NTM can effectively passivate the crystal defects of perovskite films filled in the triple mesopores (mesoscopic TiO2/ZrO2/C), which enhances the pore filling and improves the carrier transportation and extraction efficiency. In addition, the amide group can effectively enhance the work function of the perovskite films and further increase the open‐circuit voltage (VOC) of the p‐MPSCs. Consequently, major benefitting from the significant increase in VOC (from 880 to 970 mV), the power conversion efficiency (PCE) of the NTM‐modified p‐MPSCs is improved up to 16.36%, which is nearly 20% improvement compared with the 14.36% of the control devices. In addition, the unencapsulated modified NTM‐modified (FA)CsRbPbI3 p‐MPSCs show excellent stability in air by maintaining 85% of the initial PCE after 90 days of storage.

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“…In another work, Yang et al used 1-(2-chlorothal) piperidine hydrochloride (ClEP) as an additive that could passivate noncoordination ions and defects of perovskite film, which is beneficial to improve V OC and PCE of screen-printed PSCs. [171] To better control the crystallization of perovskite, additives with a multi-coordination effect have been developed. Rong et al cooperated NH 4 Cl and H 2 O to control the crystallization and growth of perovskite.…”

Section: Additive Engineeringmentioning

confidence: 99%

“…Besides, Yang et al introduced the multifunctional additive 1-(2-chloroethyl) piperidine hydrochloride (ClEP) into the perovskite precursor solution to improve the V OC of the device through interface passivation. [171] ClEP showed multiple passivation functions for uncoordinated I − , vacancy defects, and ion defects during the slow crystallization process. The results show that ClEP plays a significant role in reducing the electron defect density and non-radiative center of perovskite film.…”

Section: Additive Engineeringmentioning

confidence: 99%

Screen‐Printing Technology for Scale Manufacturing of Perovskite Solar Cells

et al. 2023

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As a key contender in the field of photovoltaics, third‐generation thin‐film perovskite solar cells (PSCs) have gained significant research and investment interest due to their superior power conversion efficiency (PCE) and great potential for large‐scale production. For commercialization consideration, low‐cost and scalable fabrication is of primary importance for PSCs, and the development of the applicable film‐forming techniques that meet the above requirements plays a key role. Currently, large‐area perovskite films are mainly produced by printing techniques, such as slot‐die coating, inkjet printing, blade coating, and screen‐printing. Among these techniques, screen printing offers a high degree of functional layer compatibility, pattern design flexibility, and large‐scale ability, showing great promise. In this work, the advanced progress on applying screen‐printing technology in fabricating PSCs from technique fundamentals to practical applications is presented. The fundamentals of screen‐printing technique are introduced and the state‐of‐the‐art studies on screen‐printing different functional layers in PSCs and the control strategies to realize fully screen‐printed PSCs are summarized. Moreover, the current challenges and opportunities faced by screen‐printed perovskite devices are discussed. This work highlights the critical significance of high throughput screen‐printing technology in accelerating the commercialization course of PSCs products.

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A multifunctional piperidine-based modulator for printable mesoscopic perovskite solar cells

Cited by 20 publications

References 49 publications

Methanesulfinate Modifier for Printable Mesoscopic Perovskite Solar Cells with Enhanced Performance

Methanesulfinate Modifier for Printable Mesoscopic Perovskite Solar Cells with Enhanced Performance

Comprehensively Improved the Performance of Carbon‐Based Printed Mesoscopic (FA)CsRbPbI₃ Solar Cells by 3‐Pyridine Formamide

Screen‐Printing Technology for Scale Manufacturing of Perovskite Solar Cells

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A multifunctional piperidine-based modulator for printable mesoscopic perovskite solar cells

Cited by 20 publications

References 49 publications

Methanesulfinate Modifier for Printable Mesoscopic Perovskite Solar Cells with Enhanced Performance

Methanesulfinate Modifier for Printable Mesoscopic Perovskite Solar Cells with Enhanced Performance

Comprehensively Improved the Performance of Carbon‐Based Printed Mesoscopic (FA)CsRbPbI3 Solar Cells by 3‐Pyridine Formamide

Screen‐Printing Technology for Scale Manufacturing of Perovskite Solar Cells

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Comprehensively Improved the Performance of Carbon‐Based Printed Mesoscopic (FA)CsRbPbI₃ Solar Cells by 3‐Pyridine Formamide