Hybrid solar cells of micro/mesoporous Zn(OH)2 and its graphite composites sensitized by CdSe quantum dots

SM Z. Islam; Taposh Gayen; Naing Tint; Lingyan Shi; Amani M. Ebrahim; Mykola Seredych; Teresa J. Bandosz; Robert R. Alfano

doi:10.1117/1.JPE.4.043098

18 February 2014 Hybrid solar cells of micro/mesoporous Zn(OH)2 and its graphite composites sensitized by CdSe quantum dots

SM Z. Islam, Taposh Gayen, Naing Tint, Lingyan Shi, Amani M. Ebrahim, Mykola Seredych, Teresa J. Bandosz, Robert R. Alfano

Author Affiliations +

Journal of Photonics for Energy, Vol. 4, Issue 1, 043098 (February 2014). https://doi.org/10.1117/1.JPE.4.043098

Abstract

Quantum efficiencies (QEs) of innovative hybrid solar cells fabricated using micro/mesoporous zinc (hydr)oxide and its graphite-based composites sensitized by semiconductor quantum dots (SQDs) are reported. High absorption coefficient of CdSe SQDs and the wide band gap of zinc (hydr)oxide and its composites with graphite oxide (GO) are essential to achieve solar cells of higher QEs. Hybrid solar cells are fabricated from zinc (hydr)oxide and its composites (with 2 and 5 wt.% of graphite oxides, termed as, ZnGO-2 and ZnGO-5, respectively) while using potassium iodide or perovskite as an electrolyte. A two-photon fluorescence (TPF) imaging technique was used to determine the internal structure of the solar cell device. The photocurrent and current-voltage measurements were used to measure short-circuit current and open-circuit voltage to calculate the fill factor and QE of these solar cells. The highest QE (up to ∼10.62% ) is realized for a ZnGO-2-based solar cell using potassium iodide as its electrolyte and the CdSe quantum dot as its sensitizer.

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SM Z. Islam, Taposh Gayen, Naing Tint, Lingyan Shi, Amani M. Ebrahim, Mykola Seredych, Teresa J. Bandosz, and Robert R. Alfano "Hybrid solar cells of micro/mesoporous Zn(OH)2 and its graphite composites sensitized by CdSe quantum dots," Journal of Photonics for Energy 4(1), 043098 (18 February 2014). https://doi.org/10.1117/1.JPE.4.043098

Published: 18 February 2014

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