Lifetime of Photogenerated Carriers in TCNQ Single Crystals

Abstract

Measurement of photocurrents using the variable frequency chopped light technique shows that the reported photocurrents are due to photogeneration of carriers rather than a bolometric effect. The carrier lifetime, which is 10 to 40 ms at room temperature is independent of wavelength, but dependent on temperature according to the equation t = to eElkT with E = 0.255 eV.La mesure de photocourrants, utilisant la technique du lumiere coupke avec une frkquence variable, se demontre que les photocourrants rapport& sout due i la photogeneration des carrikres plus qu'a l'effet bolometrique. Le temps de vie du carriiires, qui est entre 10 40 ms & la tempkrature ambiante, est independent de la longeur de I'onde, mais dependent A la temperature, selou: z = z , eEIBT, E = 0,255 eV.

The Effect of Current Injection on Photoconduction

“…2. Equation (15) means that the life-time will be constant and the generation rate will (18) and (19) mean that the life-time will be independent of intensity. 4.…”

“…4. Equations (15) and (17) mean that steady state conductivity (= fz) will increase linearly increase linearly with increase in voltage.…”