Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.orgel.2014.03.032
Title: Enhanced absorbance and electron collection in inverted organic solar cells: Optical admittance and transient photocurrent analyses
Authors: Kam, Z.
Yang, Q.
Wang, X.
Wu, B.
Zhu, F.
Zhang, J.
Wu, J. 
Keywords: Lifetime
Optical admittance analysis
Organic solar cells
Transient photocurrent
Issue Date: 2014
Citation: Kam, Z., Yang, Q., Wang, X., Wu, B., Zhu, F., Zhang, J., Wu, J. (2014). Enhanced absorbance and electron collection in inverted organic solar cells: Optical admittance and transient photocurrent analyses. Organic Electronics: physics, materials, applications 15 (7) : 1306-1311. ScholarBank@NUS Repository. https://doi.org/10.1016/j.orgel.2014.03.032
Abstract: Optical admittance analysis reveals that light absorption in inverted organic solar cells (OSCs), based on the same polymer blend layer of regio-regular poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM), is always greater than their regular geometry OSCs fabricated using an ITO/poly(3,4-ethylene dioxythiophene):(polystyrene sulfuric acid) anode. Transient photocurrent measurements elucidate that interfacial exciton dissociation at the cathode interfaces of Al-modified ITO/PCBM (inverted cell) and Al/PCBM (regular cell) is not equivalent. It is shown that the reverse configuration allows improving the absorbance of the cell, favoring charge collection at cathode/PCBM interface and also possessing a dawdling degradation behavior as compared to a control regular OSC in the accelerated aging test. © 2014 Elsevier B.V. All rights reserved.
Source Title: Organic Electronics: physics, materials, applications
URI: http://scholarbank.nus.edu.sg/handle/10635/93754
ISSN: 15661199
DOI: 10.1016/j.orgel.2014.03.032
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