Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
The challenges in front of PETE (photon-enhanced thermionic emission for solar concentrators) electrode synthesis are considered in this study. Composite PS (porous silicon) layers are suggested as a perspective material for PETE cathode realization due to the possibility to modify their band gap in a wide range from 1 to 3 eV and extensive capabilities for surface functionalization allowing for the variability of electron work function from the surface of the material. UV-Vis spectroscopy was used in order to characterize the surface structure of PS/Ag layers. The efficiency of thermionic energy conversion (TEC) is also analyzed, the problem of low electron work function material synthesis is acknowledged. In that regard the dynamic cesium flow technique is realized in order to create a novel nanostructured anode based on Ni covered with Cs - intercalated graphene layers. The electron work function lowering effect (up to 1 eV) is observed within this structure, leading to an overall increase in TEC efficiency to the value of 20% at ТЕ = 1570 K and ТС = 670 K.
Original language | English |
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Title of host publication | 2019 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering |
Subtitle of host publication | Proceedings |
Editors | S. Shaposhnikov |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 786-790 |
Number of pages | 5 |
ISBN (Electronic) | 9781728103396 |
ISBN (Print) | 9781728103402 |
DOIs | |
State | Published - 28 Feb 2019 |
Event | 2019 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering, ElConRus 2019 - Saint Petersburg and Moscow, Russian Federation Duration: 28 Jan 2019 → 30 Jan 2019 |
Name | IEEE NW Russia Young Researchers in Electrical and Electronic Engineering Conference |
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ISSN (Print) | 2376-6565 |
Conference | 2019 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering, ElConRus 2019 |
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Country/Territory | Russian Federation |
City | Saint Petersburg and Moscow |
Period | 28/01/19 → 30/01/19 |
ID: 47671031