In situ-synthesized cadmium sulfide nanowire photosensor with a parylene passivation layer for chemiluminescent immunoassays

Ju Hee Im, Hong Rae Kim, Byoung Gi An, Young Wook Chang, Min Jung Kang, Tae Geol Lee, Jin Gyeng Son, Jae Gwan Park, Jae Chul Pyun

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The direct in situ synthesis of cadmium sulfide (CdS) nanowires (NWs) was presented by direct synthesis of CdS NWs on the gold surface of an interdigitated electrode (IDE). In this work, we investigated the effect of a strong oxidant on the surfaces of the CdS NWs using X-ray photoelectron spectroscopy, transmission electron microscopy, and time-of-flight secondary ion mass spectrometry. We also fabricated a parylene-C film as a surface passivation layer for in situ-synthesized CdS NW photosensors and investigated the influence of the parylene-C passivation layer on the photoresponse during the coating of parylene-C under vacuum using a quartz crystal microbalance and a photoanalyzer. Finally, we used the in situ-synthesized CdS NW photosensor with the parylene-C passivation layer to detect the chemiluminescence of horseradish peroxidase and luminol and applied it to medical detection of carcinoembryonic antigen.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalBiosensors and Bioelectronics
Volume92
DOIs
Publication statusPublished - 2017 Jun 15

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry

Cite this