Heterojunction solar cells with integrated Si and ZnO nanowires and a chalcopyrite thin film

Hakan Karaagac*, Mehmet Parlak, Emre Yengel, M. Saif Islam

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

16 Atıf (Scopus)

Özet

ZnO nanowires (NWs) have been successfully synthesized using a hydrothermal technique on both glass and silicon substrates initially coated with a sputtered ZnO thin film layer. Varying ZnO seed layer thicknesses were deposited to determine the effect of seed layer thickness on the quality of ZnO NW growth. The effect of growth time on the formation of ZnO NWs was also studied. Experimental results show that these two parameters have an important effect on formation, homogeneity and vertical orientation of ZnO NWs. Silicon nanowires were synthesized by a Ag-assisted electroless etching technique on an n-type Si (100) wafer. SEM observations have revealed the formation of vertically-aligned Si NWs with etching depth of ∼700 nm distributed over the surface of the Si. An electron-beam evaporated chalcopyrite thin film consisting of p-type AgGa0.5In0.5Se2 with ∼800 nm thickness was deposited on the n-type ZnO and Si NWs for the construction of nanowire based heterojunction solar cells. For the Si NW based solar cell, from a partially illuminated area of the solar cell, the open-circuit voltage, short-circuit current density, fill factor and power conversion efficiency were 0.34 V, 25.38 mA cm-2, 63% and 5.50%, respectively. On the other hand, these respective parameters were 0.26 V, 3.18 mA cm-2, 35% and 0.37% for the ZnO NW solar cell.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)382-390
Sayfa sayısı9
DergiMaterials Chemistry and Physics
Hacim140
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - 15 Haz 2013
Harici olarak yayınlandıEvet

Finansman

This work was supported by Turkish Scientific and Research Council (TUBITAK) under BIDEB-2219 program. The Authors would like to thank Mustafa Kulakci for his assistance in the preparation of silicon nanowires.

FinansörlerFinansör numarası
TUBITAKBIDEB-2219
Turkish Scientific and Research Council

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