Study of carrier-mobility of organic thin film by dark-injection time-of-flight and electric-field-induced optical second-harmonic generation measurements

Abstract

Study of carrier-mobility of organic thin film by dark-injection time-of-flight and electric-field-induced optical second-harmonic generation measurements

Initial Photocarrier Generation Process in Organic Photovoltaics Observed with Light‐Triggered Time‐Domain Reflectometry

“…In this study, this differential equation was solved numerically, and the time evolution of the photocarrier distribution was traced. To numerically solve the differential equation, we included a diffusion coefficient of 4 Â 10 À10 m 2 s À1 , [15][16][17] carrier lifetime of 3 Â 10 À6 s, [18] thermal equilibrium carrier density of 3 Â 10 11 m À3 , [17,19] and the LED light rise time of 70 ns. Figure 6a shows the calculated photocarrier distribution over 0-10 μs, while (b) shows the calculated photocarrier distribution after ceasing the photoirradiation (10-70 μs).…”