Chung Yuan Christian University 1 article published in JoVE Engineering Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells Ming-Yi Lin1, Shang-Hsuan Wu2, Li-Jen Hsiao3, Widhya Budiawan2, Shih-Lun Chen4, Wei-Chen Tu4, Chia-Yen Lee1, Yia-Chung Chang2, Chih-Wei Chu2 1Department of Electrical Engineering, National United University, 2Research Center of Applied Science, Academia Sinica, 3Department of Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 4Department of Electronic Engineering, Chung Yuan Christian University This manuscript describes how to design and fabricate efficient inverted SMPV1:PC71BM solar cells with ZnO nanorods (NRs) grown on a high quality Al-doped ZnO (AZO) seed layer. The well-aligned vertically oriented ZnO NRs exhibit high crystalline properties. The power conversion efficiency of solar cells can reach 6.01%.