Kim SK, Kim SA, Lee CH, Lee HJ, Jeong SY: The structural and optical behaviors of K-doped ZnO/Al 2 O 3 (0001) films. Appl Phys Lett 2004, 85:419–421. 10.1063/1.1773612CrossRef 37. Gopalakrishnan N, Shin BC, Lin HS, Balasubramanian T, Yu YS: Effect

of GaN doping on ZnO films by pulsed laser deposition. Materials Letters 2007, 61:2307–2310. 10.1016/j.matlet.2006.08.075CrossRef 38. Frenzel H, Wenckstern HV, Weber A, Schmidt H, Biehne G, Hochmuth H, find more Lorenz M, Grundmann M: Photocurrent spectroscopy of deep levels in ZnO thin films. Physical Review B 2007, 76:035214–035219.CrossRef 39. Wang XB, Song C, Geng KW, Zeng F, Pan F: Photoluminescence and Raman scattering of Cu-doped ZnO films prepared by magnetron sputtering. Appl Surf Sci 2007, 253:6905–6906. 10.1016/j.apsusc.2007.02.013CrossRef 40. Singh R, Kumar M, Chandra S: Growth and characterization of high resistivity c-axis oriented ZnO films on different substrates by RF magnetron sputtering for MEMS applications. J Mater Sci Res 2007, 42:4675–4683. 10.1007/s10853-006-0372-5CrossRef 41. Xiu FX, Yang Z, Mandalapu LJ, Liu JL: Donor

and acceptor competitions in phosphorus-doped ZnO. Appl Phys Lett 2006, 88:152116–152118. 10.1063/1.2194870CrossRef 42. Srinivasan G, Rajendra Kumar RT, Kumar J: Influence of Al dopant on microstructure and optical properties of ZnO thin films prepared by PD0332991 sol-gel spin coating method. Optical Materials 2007, 30:314–317. 10.1016/j.optmat.2006.11.075CrossRef 43. Zou J, Yip HL, Hau SK, Jen AKY: Metal grid/conducting LDC000067 research buy polymer hybrid transparent. Appl Phys Lett 2010, 96:203301–203303.

Dipeptidyl peptidase 10.1063/1.3394679CrossRef 44. Huang J, Li G, Yang Y: A Semi-transparent plastic solar cell fabricated by a lamination process. Adv Mater 2008, 20:415–419. 10.1002/adma.200701101CrossRef 45. Yu BY, Tsai A, Tsai SP, Wong KT, Yang Y, Chu CW: Efficient inverted solar cells using TiO 2 nanotube arrays, J. J Shyue Nanotechnology 2008, 19:255202–255206. 10.1088/0957-4484/19/25/255202CrossRef 46. Li G, Chu CW, Shrotriya V, Huang J, Yang Y: Efficient inverted polymer solar cells. Appl Phys Lett 2006, 88:253503–253505. 10.1063/1.2212270CrossRef 47. Zhou Y, Li F, Barrau S, Tian W, Inganas O, Zhang F: Inverted and transparent polymer solar cells prepared with vacuum-free processing. Sol Energ Mater Sol Cell 2009, 93:497–500. 10.1016/j.solmat.2008.11.002CrossRef 48. Huang J, Xu Z, Yang Y: Low-work-function surface formed by solution-processed and thermally deposited nanoscale layers of cesium carbonate. Adv Funct Mater 2007, 17:1966–1973. 10.1002/adfm.200700051CrossRef 49. Briere TR, Sommer AH: Low‒work‒function surfaces produced by cesium carbonate decomposition. Journal of Applied Physics 1977, 48:3547–3550. 10.1063/1.324152CrossRef 50. Wu CI, Lin CT, Chen YH, Chen MH, Lu YJ, Wu CC: Electronic structures and electron-injection mechanisms of cesium-carbonate-incorporated cathode structures for organic light-emitting devices. Appl Phys Lett 2006, 88:152104–152106. 10.1063/1.2192982CrossRef 51.