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During the past years, there have been numerous interests in the fabrication of polymer solar cells due to its flexibility and easy fabrication process. The most common system so far for polymer solar cells is the one consisting of poly (3-hexylthiophene)(P3HT) and (6, 6)-phenyl C61 butyric acid methyl ester (PCBM) that is sandwiched between poly (3, 4-ethylene dioxythiophene): poly (styrene sulfonate)(PEDOT PSS) and Al metal. However, conventional bulk-heterojunction (BHJ) architecture has limitations in device stability. Without encapsulation, exposure of conventional solar cells to air leads to oxidation of the Al electrode and degradation of the indium tin oxide (ITO)/PEDOT PSS interface because of the acidic nature of PEDOT: PSS [1]. One approach to improve device stability is using polymer/ZnO nanorod hybrid solar cell. In our solar cell, the interface of ITO/PEDOT: PSS can be avoided by employing ZnO …