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|Title:||Enhanced absorbance and electron collection in inverted organic solar cells: Optical admittance and transient photocurrent analyses||Authors:||Kam, Z.
Optical admittance analysis
Organic solar cells
|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|
|Appears in Collections:||Staff Publications|
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