Yazar
Elçioğlu, E. B., Didari, Azadeh, Özyurt, T. O., Mengüç, Mustafa Pınar
Basım Tarihi
2019-03-06
Basım Yeri
-
IOP Publishing
Konu
Near-field thermal radiation, Energy harvesting, Wafer material, Doping
Tür
Süreli Yayın
Dil
İngilizce
Dijital
Evet
Yazma
Hayır
Kütüphane
Özyeğin Üniversitesi
Demirbaş Numarası
0022-3727
Kayıt Numarası
ff65a97b-96ff-4109-97f1-38482657707c
Lokasyon
Mechanical Engineering
Tarih
2019-03-06
Notlar
TÜBİTAK ; Center for Energy, Environment and Economy (CEEE) at Ozyegin University, Istanbul, Turkey
Örnek Metin
Near-field radiative transfer (NFRT) refers to the energy transfer mechanism which takes place between media separated by distances comparable to or much smaller than the dominant wavelength of emission. NFRT is due to the contribution of evanescent waves and coherent nature of the energy transfer within nano-gaps, and can exceed Planck's blackbody limit. As researchers further investigate this phenomenon and start fabrication of custom-made platforms, advances in utilization of NFRT in energy harvesting applications move forward day by day. In designing and manufacturing such harvesting devices, chemical and physical properties of surfaces and wafers are important for development of effective solutions. In this work, we compare several III-V group compound semiconductor wafers (mainly GaAs, InSb, and InP) from fabrication point of view, in order to explore their possible use in future devices. The results presented here show that the type of dopant, wafer temperature, and gap size are very important factors as they affect the NFRT rates. GaAs, InSb, and InP wafers significantly enhance the near-field fluxes beyond the blackbody rates, and n-type InSb yields to the highest enhancement. For GaAs, p-type yielded a higher radiative flux compared to n-type GaAs, as oppose to n-type InSb outperforming its p-type and undoped counterparts. Furthermore, the possible use of n-InSb as the TPV cell at 550K is discussed for effective energy harvesting. These findings can be useful for determination of the proper material type for emitting and non-emitting NFRT-based energy harvesting devices.
DOI
10.1088/1361-6463/aaf947
Cilt
52
