Gold Bulletin

, Volume 52, Issue 1, pp 1–7 | Cite as

Au/CdSe hybrid nanoflowers: a high photocurrent generating photoelectrochemical cells

  • Krishna Kanta HaldarEmail author
  • Rathindranath Biswas
  • Amitava Patra
  • Krishna Kamal Halder
  • Tapasi Sen
Original Paper


Photoelectrochemical cell composed of solution-processed nanoflower heterostructure of Au core and eight CdSe petals was investigated for enhanced photocurrent generation. The electrode of CdSe nanorods displayed photocurrent density of 2.1 mA/cm2 whereas the Au core CdSe nanoflower exhibited 4.6 mA/cm2 corresponding to a 119% increase during photoelectrochemical cell performance. Both electrodes showed prompt response to the on/off cycles of light, the photocurrent gain (IPhoton/Idark) in CdSe nanorods is 124.7, while the value is 223.3 for Au/CdSe nanoflower, calculated from the growth-decay curves. Photoresponse time was dramatically improved for Au/CdSe nanoflower samples due to increasing in 66% incident photon-to-current emission. Electron lifetime of 21.63 and 48.71 ns was observed for the electrode of CdSe nanorods and Au/CdSe nanoflowers respectively. The prolonged electron lifetime in the case of the electrode of Au/CdSe nanoflowers was responsible for improving charge separation and as a consequence, higher photocurrent generation.


Au/CdSe Nanoflower Heterostructure Photocurrent Photoelectrochemical cells 


Funding information

This work was financially supported by the research seed money from Central University of Punjab, Bathinda [Project GP-25].

Supplementary material

13404_2018_247_MOESM1_ESM.doc (1.5 mb)
ESM 1 (DOC 1585 kb)


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Krishna Kanta Haldar
    • 1
    Email author
  • Rathindranath Biswas
    • 1
  • Amitava Patra
    • 2
  • Krishna Kamal Halder
    • 3
  • Tapasi Sen
    • 4
  1. 1.Department of Chemical SciencesCentral University of PunjabBathindaIndia
  2. 2.Department of Materials ScienceIndian Association for the Cultivation of ScienceKolkataIndia
  3. 3.Physics Department, Kirori Mal CollegeUniversity of DelhiDelhiIndia
  4. 4.Institute of Nano Science & TechnologyMohaliIndia

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