Academic Journal
Quantum Confinement in the Spectral Response of n-Doped Germanium Quantum Dots Embedded in an Amorphous Si Layer for Quantum Dot-Based Solar Cells
| العنوان: | Quantum Confinement in the Spectral Response of n-Doped Germanium Quantum Dots Embedded in an Amorphous Si Layer for Quantum Dot-Based Solar Cells |
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| المؤلفون: | Parravicini, Jacopo, Trapani, Francesco Di, Nelson, Michael D., Rex, Zachary T., Beiter, Ryan D., Catelani, Tiziano, Acciarri, Maurizio F., Podesta, Alessandro, Lenardi, Cristina, Binetti, Simona O., Vece, Marcel Di |
| المساهمون: | Parravicini, J, Trapani, F, Nelson, M, Rex, Z, Beiter, R, Catelani, T, Acciarri, M, Podesta, A, Lenardi, C, Binetti, S, Vece, M |
| بيانات النشر: | American Chemical Society US |
| سنة النشر: | 2020 |
| المجموعة: | Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
| مصطلحات موضوعية: | germanium, Quantum Dot, solar cell, a-Si, quantum confinement, spectral response, X-ray photoelectron spectroscopy, atomic force microscopy |
| الوصف: | Quantum dot solar cells are based on the concept of harvesting different parts of the solar light spectrum with a single, cheap semiconductor by simply changing the size of the nanoparticles. Of the many compositions explored, germanium is one of the most interesting as it has the major advantage of a large Bohr radius, which allows for the fabrication of larger particles. Moreover, germaniums possess very high optical absorption, and a small band gap give it free parameters to optimize the quantum dot solar cell. In a previous work, the germanium quantum dots were used in a Gratzel type solar cell containing an electrolyte, which is not desirable for applications. In this work instead, the n-doped germanium quantum dots were combined with a p-doped a-Si layer, making it the first all solid-state solar cell made from nanoparticles from a gas aggregation nanoparticle source. Remarkably, the effect of quantum confinement in both the germanium quantum dot assembled layer and a-Si was observed by peaks in the spectral response experiments. This work forms an important step toward realizing a germanium quantum dot based solar cell and studying quantum dot based solids. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000526396200073; volume:3; issue:3; firstpage:2813; lastpage:2821; numberofpages:9; journal:ACS APPLIED NANO MATERIALS; http://hdl.handle.net/10281/274704; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85084577033 |
| DOI: | 10.1021/acsanm.0c00125 |
| الاتاحة: | http://hdl.handle.net/10281/274704 https://doi.org/10.1021/acsanm.0c00125 |
| Rights: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.3A72AA2F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acsanm.0c00125 |
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