Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media
Abstract 2D metal monochalcogenides have recently attracted interest for photoelectrochemical (PEC) applications in aqueous electrolytes. Their optical bandgap in the visible and near‐infrared spectral region is adequate for energy conversion and photodetection/sensing. Their large surface‐to‐volume...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-01-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202201635 |
| _version_ | 1827893225328738304 |
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| author | Gabriele Bianca Marilena Isabella Zappia Sebastiano Bellani Michele Ghini Nicola Curreli Joka Buha Valerio Galli Mirko Prato Aljoscha Soll Zdeněk Sofer Guglielmo Lanzani Ilka Kriegel Francesco Bonaccorso |
| author_facet | Gabriele Bianca Marilena Isabella Zappia Sebastiano Bellani Michele Ghini Nicola Curreli Joka Buha Valerio Galli Mirko Prato Aljoscha Soll Zdeněk Sofer Guglielmo Lanzani Ilka Kriegel Francesco Bonaccorso |
| author_sort | Gabriele Bianca |
| collection | DOAJ |
| description | Abstract 2D metal monochalcogenides have recently attracted interest for photoelectrochemical (PEC) applications in aqueous electrolytes. Their optical bandgap in the visible and near‐infrared spectral region is adequate for energy conversion and photodetection/sensing. Their large surface‐to‐volume ratio guarantees that the charge carriers are photogenerated at the material/electrolyte interface, where redox reactions occur, minimizing recombination processes. However, solution‐processed photoelectrodes based on these materials exhibit energy conversion efficiencies that are far from the current state of the art expressed by established technologies. This work reports a systematic morphological, spectroscopic, and PEC characterization of solution‐processed films of photoactive InSe flakes for PEC‐type photodetectors. By optimizing the thickness and hybridizing InSe flakes with electrically conductive Sn:In2O3 (ITO) nanocrystals, photoanodes with a significant photoanodic response in both acidic and alkaline media are designed, reaching responsivity up to 60.0 mA W−1 (external quantum efficiency = 16.4%) at +0.4 V versus RHE under visible illumination. In addition, a strategy based on the use of sacrificial agents (i.e., 2‐propanol and Na2SO3) is proposed to improve the stability of the InSe and ITO/InSe photodetectors. Our data confirm the potential of 2D InSe for PEC energy conversion and sensing applications, remarking the challenges related to InSe stability during anodic operation. |
| first_indexed | 2024-03-12T21:50:47Z |
| format | Article |
| id | doaj.art-0a871caf59ec4ff99e97703aa157edf5 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-12T21:50:47Z |
| publishDate | 2023-01-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-0a871caf59ec4ff99e97703aa157edf52023-07-26T01:40:29ZengWiley-VCHAdvanced Materials Interfaces2196-73502023-01-01101n/an/a10.1002/admi.202201635Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous MediaGabriele Bianca0Marilena Isabella Zappia1Sebastiano Bellani2Michele Ghini3Nicola Curreli4Joka Buha5Valerio Galli6Mirko Prato7Aljoscha Soll8Zdeněk Sofer9Guglielmo Lanzani10Ilka Kriegel11Francesco Bonaccorso12Graphene Labs Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyBonaccorso BDimensional S.p.A. via Lungotorrente Secca 30R Genova 16163 ItalyBonaccorso BDimensional S.p.A. via Lungotorrente Secca 30R Genova 16163 ItalyFunctional Nanosystems Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyFunctional Nanosystems Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyNanochemistry Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyBonaccorso BDimensional S.p.A. via Lungotorrente Secca 30R Genova 16163 ItalyMaterials Characterization Facility Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyDepartment of Inorganic Chemistry University of Chemistry and Technology Prague Technická 5 Prague 6 166 28 Czech RepublicDepartment of Inorganic Chemistry University of Chemistry and Technology Prague Technická 5 Prague 6 166 28 Czech RepublicDipartimento di Fisica Politecnico di Milano Piazza Leonardo da Vinci 32 Milano 20133 ItalyFunctional Nanosystems Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyGraphene Labs Istituto Italiano di Tecnologia via Morego 30 Genova 16163 ItalyAbstract 2D metal monochalcogenides have recently attracted interest for photoelectrochemical (PEC) applications in aqueous electrolytes. Their optical bandgap in the visible and near‐infrared spectral region is adequate for energy conversion and photodetection/sensing. Their large surface‐to‐volume ratio guarantees that the charge carriers are photogenerated at the material/electrolyte interface, where redox reactions occur, minimizing recombination processes. However, solution‐processed photoelectrodes based on these materials exhibit energy conversion efficiencies that are far from the current state of the art expressed by established technologies. This work reports a systematic morphological, spectroscopic, and PEC characterization of solution‐processed films of photoactive InSe flakes for PEC‐type photodetectors. By optimizing the thickness and hybridizing InSe flakes with electrically conductive Sn:In2O3 (ITO) nanocrystals, photoanodes with a significant photoanodic response in both acidic and alkaline media are designed, reaching responsivity up to 60.0 mA W−1 (external quantum efficiency = 16.4%) at +0.4 V versus RHE under visible illumination. In addition, a strategy based on the use of sacrificial agents (i.e., 2‐propanol and Na2SO3) is proposed to improve the stability of the InSe and ITO/InSe photodetectors. Our data confirm the potential of 2D InSe for PEC energy conversion and sensing applications, remarking the challenges related to InSe stability during anodic operation.https://doi.org/10.1002/admi.2022016352D materialsenergy conversionphotodetectorsphotoelectrochemical cellssolution processing |
| spellingShingle | Gabriele Bianca Marilena Isabella Zappia Sebastiano Bellani Michele Ghini Nicola Curreli Joka Buha Valerio Galli Mirko Prato Aljoscha Soll Zdeněk Sofer Guglielmo Lanzani Ilka Kriegel Francesco Bonaccorso Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media Advanced Materials Interfaces 2D materials energy conversion photodetectors photoelectrochemical cells solution processing |
| title | Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media |
| title_full | Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media |
| title_fullStr | Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media |
| title_full_unstemmed | Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media |
| title_short | Indium Selenide/Indium Tin Oxide Hybrid Films for Solution‐Processed Photoelectrochemical‐Type Photodetectors in Aqueous Media |
| title_sort | indium selenide indium tin oxide hybrid films for solution processed photoelectrochemical type photodetectors in aqueous media |
| topic | 2D materials energy conversion photodetectors photoelectrochemical cells solution processing |
| url | https://doi.org/10.1002/admi.202201635 |
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