Combined effects of irradiation and hydrogen ions on surface oxidation of 308 L austenite stainless steel

Jiang, Baolong; Zhang, Binglu; He, Yang; Peng, Qunjia; Jiao, Zhijie; Li, Qiao

doi:10.1016/j.corsci.2021.109734

Cited by 6 publications

(1 citation statement)

References 88 publications

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“…It can be seen in Figure 3e that the average CPD value of the control, PAI, 3‐APAI, and 5‐AVAI‐modified perovskite films is −180.18, −201.37, −274.91, and −241.01 mV, respectively. Since the KPFM measurement uses zero potential methods to record the volt potential value, [ 47 ] we could deduce that the work function of perovskite surface upshifts 0.094 V after 3‐APAI treatment, [ 46 ] which is in line with enhanced V OC of the 3‐APAI‐modified devices.…”

Section: Resultsmentioning

confidence: 92%

Managing Interfacial Defects and Carriers by Synergistic Modulation of Functional Groups and Spatial Conformation for High‐Performance Perovskite Photovoltaics Based on Vacuum Flash Method

Gao

Chen

et al. 2023

Advanced Materials

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Interfacial nonradiative recombination loss is a huge barrier to advance the photovoltaic performance. Here, one effective interfacial defect and carrier dynamics management strategy by synergistic modulation of functional groups and spatial conformation of ammonium salt molecules is proposed. The surface treatment with 3‐ammonium propionic acid iodide (3‐APAI) does not form 2D perovskite passivation layer while the propylammonium ions and 5‐aminopentanoic acid hydroiodide post‐treatment lead to the formation of 2D perovskite passivation layers. Due to appropriate alkyl chain length, theoretical and experimental results manifest that COOH and NH3+ groups in 3‐APAI molecules can form coordination bonding with undercoordinated Pb2+ and ionic bonding and hydrogen bonding with octahedron PbI64−, respectively, which makes both groups be simultaneously firmly anchored on the surface of perovskite films. This will strengthen defect passivation effect and improve interfacial carrier transport and transfer. The synergistic effect of functional groups and spatial conformation confers 3‐APAI better defect passivation effect than 2D perovskite layers. The 3‐APAI‐modified device based on vacuum flash technology achieves an alluring peak efficiency of 24.72% (certified 23.68%), which is among highly efficient devices fabricated without antisolvents. Furthermore, the encapsulated 3‐APAI‐modified device degrades by less than 4% after 1400 h of continuous one sun illumination.

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Section: Resultsmentioning

confidence: 92%

Managing Interfacial Defects and Carriers by Synergistic Modulation of Functional Groups and Spatial Conformation for High‐Performance Perovskite Photovoltaics Based on Vacuum Flash Method

Gao

Chen

et al. 2023

Advanced Materials

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Synchronous Regulation Strategy of Pyrrolidinium Thiocyanate Enables Efficient Perovskite Solar Cells and Self‐Powered Photodetectors

Chen,

Zhang,

Wang

et al. 2024

Small

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Developing inventive approaches to control crystallization and suppress trap defects in perovskite films is crucial for achieving efficient perovskite photovoltaics. Here, a synchronous regulation strategy is developed that involves the infusion of a zwitterionic ionic liquid additive, pyrrolidinium thiocyanate (PySCN), into the perovskite precursor to optimize the subsequent crystallization and defects. PySCN modification not only orchestrates the crystallization process but also deftly addresses trap defects in perovskite films. Within this, SCN− compensates for positively charged defects, while Py+ plays the role of passivating negatively charged defects. Based on the vacuum flash evaporation without anti‐solvent, the air‐processed perovskite solar cells (PSCs) with PySCN modification can achieve an extraordinary champion efficiency of 22.46% (0.1 cm2) and 21.15% (1.0 cm2) with exceptional stability surpassing 1200 h. Further, the self‐powered photodetector goes above and beyond, showcasing an ultra‐low dark current of 2.13 × 10−10 A·cm−2, a specific detection rate of 6.12 × 1013 Jones, and an expansive linear dynamic range reaching an astonishing 122.49 dB. PySCN modification not only signifies high efficiency but also ushers in a new era for crystallization regulation, promising a transformative impact on the optoelectronic performance of perovskite‐based devices.

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Structure-regulated fluorine-containing additives to improve the performance of perovskite solar cells

Chen,

Bi,

Yan

et al. 2024

Nano Res.

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Combined effects of irradiation and hydrogen ions on surface oxidation of 308 L austenite stainless steel

Cited by 6 publications

References 88 publications

Managing Interfacial Defects and Carriers by Synergistic Modulation of Functional Groups and Spatial Conformation for High‐Performance Perovskite Photovoltaics Based on Vacuum Flash Method

Managing Interfacial Defects and Carriers by Synergistic Modulation of Functional Groups and Spatial Conformation for High‐Performance Perovskite Photovoltaics Based on Vacuum Flash Method

Synchronous Regulation Strategy of Pyrrolidinium Thiocyanate Enables Efficient Perovskite Solar Cells and Self‐Powered Photodetectors

Structure-regulated fluorine-containing additives to improve the performance of perovskite solar cells

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