Current-Voltage and Low-Frequency Noise Characteristics of Structures with Porous Silicon Layers Exposed to Different Gases
2007 (English)In: Physica. E, Low-Dimensional systems and nanostructures, ISSN 1386-9477, E-ISSN 1873-1759, Vol. 38, no 1-2, 160-163 p.Article in journal (Refereed) Published
Current–voltage and noise characteristics of porous silicon (PS)/single crystalline silicon (SCS) samples were measured under exposure to dry air, air +0.4% CO, dry air +1.7% CO, and dry air+ethyl alcohol vapor. The samples have a sandwich structure comprising Al/PS/SCS/Al. For the dry air +CO mixtures, the noise level was sensitive not only to the presence of CO but also to its percentage, and an increase of the CO concentration led to a change in the spectral density function of the low-frequency noise.
Place, publisher, year, edition, pages
2007. Vol. 38, no 1-2, 160-163 p.
Porous silicon, Gas sensor, Carbon monoxide, Ethyl alcohol, Noise
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-14446DOI: 10.1016/j.physe.2006.12.057ISI: 000246465000036OAI: oai:DiVA.org:uu-14446DiVA: diva2:42216