光强诱导的可切换光伏效应

IF 16 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ACS Nano Pub Date : 2024-12-07 DOI:10.1021/acsnano.4c10392

Amin Abnavi, Ribwar Ahmadi, Hamidreza Ghanbari, Deji Akinwande, Michael M. Adachi

{"title":"光强诱导的可切换光伏效应","authors":"Amin Abnavi, Ribwar Ahmadi, Hamidreza Ghanbari, Deji Akinwande, Michael M. Adachi","doi":"10.1021/acsnano.4c10392","DOIUrl":null,"url":null,"abstract":"Photovoltaic devices capable of reversible photovoltaic polarity through external signal modulation may enable multifunctional optoelectronic systems. However, such devices are limited to those induced by gate voltage, electrical poling, or optical wavelength by using complicated device architectures. Here, we show that the photovoltaic polarity is also switchable with the intensity of incident light. The modulation in light intensity induces photovoltaic polarity switching in geometrically asymmetric MoS2 Schottky photodiodes, explained by the asymmetric lowering of the Schottky barrier heights due to the trapping of photogenerated holes at the MoS2/Cr interface states. An applied gate voltage can further modulate the carrier concentration in the MoS2 channel, providing a method to tune the threshold light intensity of polarity switching. Finally, a bidirectional optoelectronic logic gate with “AND” and “OR” functions was demonstrated within a single device.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"1 1","pages":""},"PeriodicalIF":16.0000,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Switchable Photovoltaic Effect Induced by Light Intensity\",\"authors\":\"Amin Abnavi, Ribwar Ahmadi, Hamidreza Ghanbari, Deji Akinwande, Michael M. Adachi\",\"doi\":\"10.1021/acsnano.4c10392\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Photovoltaic devices capable of reversible photovoltaic polarity through external signal modulation may enable multifunctional optoelectronic systems. However, such devices are limited to those induced by gate voltage, electrical poling, or optical wavelength by using complicated device architectures. Here, we show that the photovoltaic polarity is also switchable with the intensity of incident light. The modulation in light intensity induces photovoltaic polarity switching in geometrically asymmetric MoS2 Schottky photodiodes, explained by the asymmetric lowering of the Schottky barrier heights due to the trapping of photogenerated holes at the MoS2/Cr interface states. An applied gate voltage can further modulate the carrier concentration in the MoS2 channel, providing a method to tune the threshold light intensity of polarity switching. Finally, a bidirectional optoelectronic logic gate with “AND” and “OR” functions was demonstrated within a single device.\",\"PeriodicalId\":21,\"journal\":{\"name\":\"ACS Nano\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":16.0000,\"publicationDate\":\"2024-12-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Nano\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1021/acsnano.4c10392\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Nano","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsnano.4c10392","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

能够通过外部信号调制可逆光伏极性的光伏器件可使多功能光电系统成为可能。然而，由于器件结构复杂，这些器件仅限于由栅极电压、电极化或光波长感应的器件。在这里，我们证明了光伏极性也可以随着入射光的强度而切换。光强调制引起几何不对称MoS2肖特基光电二极管的光伏极性切换，解释为由于在MoS2/Cr界面态捕获光生空穴而导致肖特基势垒高度的不对称降低。外加的栅极电压可以进一步调制MoS2通道中的载流子浓度，从而提供了一种调节极性开关的阈值光强的方法。最后，在单个器件内演示了具有“与”和“或”功能的双向光电逻辑门。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Switchable Photovoltaic Effect Induced by Light Intensity

查看原文本刊更多论文

Switchable Photovoltaic Effect Induced by Light Intensity

Photovoltaic devices capable of reversible photovoltaic polarity through external signal modulation may enable multifunctional optoelectronic systems. However, such devices are limited to those induced by gate voltage, electrical poling, or optical wavelength by using complicated device architectures. Here, we show that the photovoltaic polarity is also switchable with the intensity of incident light. The modulation in light intensity induces photovoltaic polarity switching in geometrically asymmetric MoS₂ Schottky photodiodes, explained by the asymmetric lowering of the Schottky barrier heights due to the trapping of photogenerated holes at the MoS₂/Cr interface states. An applied gate voltage can further modulate the carrier concentration in the MoS₂ channel, providing a method to tune the threshold light intensity of polarity switching. Finally, a bidirectional optoelectronic logic gate with “AND” and “OR” functions was demonstrated within a single device.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

ACS Nano 工程技术-材料科学：综合

CiteScore

26.00

自引率

4.10%

发文量

1627

审稿时长

1.7 months

期刊介绍： ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.