---

A combination of bulk heterojunction of P3HT: PCBM with ZnO nanorod arrays was also studied for solar cell applications. In the P3HT: PCBM devices, electron donors such as poly (3-hexythiophene) (P3HT) and acceptors as (6, 6)-phenyl C61butyric acid methyl ester (PCBM) are blended to form one mixed layer (a bulk heterojunction). The charge separation of photo-induced excitons is greatly enhanced by ultra-fast electron transfer and large interface between the two components. However, the charge collection is one of the main limitations for improving cell efficiency. In this study, ZnO nanowire arrys have been used to facilitate efficient charge collection electrodes for improving the energy conversion efficiency.

---

The Author graduated the Basrah University /Iraq and he got Bachelor and master degree in 2000 .He obtained in 2006 a scholar ship from Iraqi qeverment .After wards He got second master degree and his Ph.D in the field of organic - in organic hybrid structure solar cells .since 2001 he has worked at Thi Qar university .College of Science.

---