A carrier generation material is provided, which has a chemical structure of: ##STR00001## wherein R.sup.1 is hydrogen or alkyl group; each of R.sup.2 is independently hydrogen, halogen, --CN, --CF.sub.3, --NO.sub.2, or alkyl group; each of R.sup.3 is independently hydrogen, halogen, --CN, --CF.sub.3, --NO.sub.2, or alkyl group; R.sup.4 is hydrogen, halogen, --CN, --CF.sub.3, --NO.sub.2, or alkyl group; R.sup.5 is hydrogen, halogen, --CN, --CF.sub.3, --NO.sub.2, or alkyl group; R.sup.6 is .dbd.O, .dbd.NH, or malononitrile group, and R.sup.7 is hydrogen, halogen, --CN, --CF.sub.3, --NO.sub.2, or alkyl group. |