Study on characteristics of CdS quantum dot-sensitized solar cells prepared by successive ionic layer adsorption and reaction with different adsorption times

Myeong Soo Jeong, Minkyu Son, Soo Kyoung Kim, Songyi Park, Kandasamy Prabakar, Hee Je Kim

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Cadmium sulfide (CdS) quantum dots (QDs) were adsorbed on a titanium dioxide (TiO2) nanoporous film by successive ionic layer adsorption and reaction (SILAR) method with different adsorption times to study the influences of different SILAR adsorption times on CdS quantum dot-sensitized solar cells (QDSCs). The optical properties of CdS sensitized TiO2 films were studied by scanning electron microscopy and UV-Vis absorbance spectroscopy. The particle size of the CdS QDs was approximated using the effective mass approximation theory from the absorbance spectra. The photovoltaic characteristics of the CdS QDSCs were analyzed by I-V characteristics and electrochemical impedance spectroscopy under air mass 1.5 illumination. As a result, the particle size of the CdS QDs became larger and light harvesting was enhanced with increasing SILAR adsorption time. The maximum photovoltaic conversion efficiency of the CdS QDSCs (1.86%) was obtained at the SILAR adsorption time of 30 min with the highest short circuit current density and lowest charge transfer resistance.

Original languageEnglish
Pages (from-to)621-626
Number of pages6
JournalElectronic Materials Letters
Volume10
Issue number3
DOIs
Publication statusPublished - Jan 1 2014
Externally publishedYes

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Cadmium sulfide
Semiconductor quantum dots
Solar cells
Adsorption
Particle size
Approximation theory
cadmium sulfide
Electrochemical impedance spectroscopy
Short circuit currents
Titanium dioxide
Conversion efficiency
Charge transfer
Current density
Optical properties
Lighting
Spectroscopy
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Study on characteristics of CdS quantum dot-sensitized solar cells prepared by successive ionic layer adsorption and reaction with different adsorption times. / Jeong, Myeong Soo; Son, Minkyu; Kim, Soo Kyoung; Park, Songyi; Prabakar, Kandasamy; Kim, Hee Je.

In: Electronic Materials Letters, Vol. 10, No. 3, 01.01.2014, p. 621-626.

Research output: Contribution to journalArticle

Jeong, Myeong Soo ; Son, Minkyu ; Kim, Soo Kyoung ; Park, Songyi ; Prabakar, Kandasamy ; Kim, Hee Je. / Study on characteristics of CdS quantum dot-sensitized solar cells prepared by successive ionic layer adsorption and reaction with different adsorption times. In: Electronic Materials Letters. 2014 ; Vol. 10, No. 3. pp. 621-626.
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AU - Prabakar, Kandasamy

AU - Kim, Hee Je

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