Solid State Science and Technology, Vol. 19, No 1 (2011) 101-106

ISSN 0128-7389





C.C. Yap1,*, M. Yahaya1, and M.M. Salleh2

1School of Applied Physics, Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

2Institute of Microengineering and Nanoelectronics,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia



Inverted bulk heterojunction organic solar cells based on a blend of poly[2-methoxy-5-

(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV) as donor and (6,6)-Phenyl-C61

butyric acid methyl ester (PCBM) as acceptor with a structure of FTO/ZnO nanorods

array/MEHPPV:PCBM/Au utilizing ZnO nanorods array as electron collecting layer

and gold as a hole collecting electrode were investigated. The organic layer consisting

of MEHPPV and PCBM was spin-coated on ZnO nanorod arrays. ZnO nanorod arrays

were grown on fluorine-doped tin oxide (FTO) glass substrates which were pre-coated

with ZnO nanoparticles using a low temperature chemical solution method. The device

gave a short circuit current density of 0.18 mA/cm2 and an open circuit voltage of 0.38

V under illumination of a simulated AM 1.5 G sunlight at 100 mW/cm2. The power

conversion efficiency of the solar cell was increased from 0.0015 % to 0.016 % through

the introduction of ZnO nanorods arrays.



[1] G.Yu, J.Gao, J.C. Hummelen, F. Wudl, and A.J. Heeger, Science 270 (1995)


[2] C.J. Brabec, N.S. Sariciftci, and J.C. Hummelen, Adv. Funct. Mater. 11 (2001)


[3] M. Jørgensen, K. Norrman, and F.C. Krebs, Sol. Energy Mater. Sol. Cells 92

(2008) 686

[4] Q.L. Song, M.L. Wang, E.G. Obbard, X.Y. Sun, X.M. Ding, X.Y. Hou, and

C.M. Li, Appl. Phys. Lett. 89 (2006) 251118

[5] T. Kuwabara, H. Sugiyama, T. Yamaguchi and K. Takahashi, Thin Solid Films

517 (2009) 3766.

[6] L. Vayssieres, Adv. Mater. 15 (2003). 464

[7] M.Guo, P. Diao, and S.M. Cai, J. Solid State Chem. 178 (2005) 1864

[8] M. Law, L.E. Greene, J.C. Johnson, R. Saykally and P. Yang, Nat. Mater. 4

(2005) 455

[9] C. Le´vy-Cle´ment, R. Tena-Zaera, M.A. Ryan, A. Katty, and G. Hodes, Adv.

Mater. 17 (2005) 1512

[10] D.C. Olson, J. Piris, R.T. Collins, S.E. Shaheen and D.S. Ginley, Thin Solid

Films, 496 (2006) 26

[11] K. Takanezawa, K. Hirota, Q.S. Wei, K. Tajima and K. Hashimoto, J. Phys.

Chem. C, 111 (2007) 7218

[12] M. Yahaya, C.C. Yap, and M.M. Salleh, AIP Conference Proceeding, 1169

(2009) 32

[13] P. Suresh, P. Balaraju, S.K. Sharma, M.S. Roy and G.D. Sharma, Sol. Energy

Mater. Sol. Cells 92 (2008) 900