Analysis of carrier transport and carrier trapping in organic diodes with polyimide-6,13-Bis(triisopropylsilylethynyl)pentacene double-layer by charge modulation spectroscopy and optical second harmonic generation measurement

Abstract

Articles you may be interested inAnalysis of carrier behavior in C60/P(VDF-TrFE) double-layer capacitor by using electric-field-induced optical second-harmonic generation measurement J. Appl. Phys. 114, 234504 (2013); 10.1063/1.4853035 Topography-guided spreading and drying of 6,13-bis(triisopropylsilylethynyl)-pentacene solution on a polymer insulator for the field-effect mobility enhancement Appl. Phys. Lett. 102, 193307 (2013); 10.1063/1.4807461 Bulk-trap modulated Maxwell-Wagner type interfacial carrier relaxation process in a fullerene/polyimide doublelayer device investigated by time-resolved second harmonic generation J. Appl. Phys. 110, 033715 (2011); 10.1063/1.3610952Probing carrier injection into pentacene field effect transistor by time-resolved microscopic optical second harmonic generation measurement Analysis of hysteresis behavior of pentacene field effect transistor characteristics with capacitance-voltage and optical second harmonic generation measurements

Analysis of interfacial energy states in Au/pentacene/polyimide/indium–zinc-oxide diodes by electroluminescence spectroscopy and electric-field-induced optical second-harmonic generation measurement

“…[36][37][38] It is also noteworthy that, we recently got similar results as that holes can be trapped into polyimide interface energy states beyond the pentacene layer, by using C-V measurement coupled with charge modulation spectroscopy (CMS), where diodes with TIPS-pentacene=polyimide double-layers were used. 14) The EL-EFISHG measurement of Au=pentacene=polyimide diode studied here showed good agreement with our recent study on TIPS-pentacene=polyimide diodes.…”

“…In contrast, the electric-field-induced optical second-harmonic generation (EFISHG) measurement which we have been developing is capable of directly probing carrier behavior, without aid of the equivalent circuit model [9][10][11]. By using an optical probe of pulsed laser beam, EFISHG is activated at molecules in response to dynamical motion of carriers that are injecting, accumulating, and transporting in OFET-type devices [12,13] and in organic metal-insulator-metal (MIM)structure devices [14,15]. These activated EFISHGs allow motion of carriers in organic devices to be probed directly and selectively.…”

“…[9][10][11] By using an optical probe of pulsed laser beam, EFISHG is activated at molecules in response to dynamical motion of carriers that are injecting, accumulating, and transporting in OFET-type devices 12,13) and in organic metal-insulator-metal (MIM) structure devices. 14,15) These activated EFISHGs allow motion of carriers in organic devices to be probed directly and selectively. However, these are no longer sufficient.…”

Analysis of current-voltage characteristics of Au/pentacene/fluorine polymer/indium zinc oxide diodes by electric-field-induced optical second-harmonic generation

“…The electroluminescence (EL) generated from the pentacene in the region V > 0 supports our model that electron transport occurs across the FP layer. The resulting carrier transport mechanism is considerably different from that observed for organic double-layer diodes with structures of Au/pentacene/polyimide (PI)/IZO [13], Au/6,13bis(triisopropylsilylethynyl)-pentacene/PI/indium tin oxide (ITO) [14], IZO/ N,N'-di- [15], and Au/pentacene/poly(vinylidene fluoridetrifluoroethylene) [16], which we investigated in our previous studies. EFISHG coupled with the I-V measurement is helpful for analyzing the carrier transport mechanism of organic double-layer diodes, and thus enables the study of the electrical transport properties of organic semiconductor layers.…”

Modeling and visualization of carrier motion in organic films by optical second harmonic generation and Maxwell-displacement current

“…Further we need to couple MDC and EFISHG measurements with other methods that can probe carrier motions in energy space. Coupling of charge modulation spectroscopy, electro-absorption spectroscopy, and others will be effective [115,[166][167][168][169]. Further experiments and studies proceed.…”