3.9 Article

ELECTRODEPOSITION OF ZnO NANOROD ARRAYS FOR APPLICATION IN PEROVSKITE BASED SOLAR CELLS

期刊

JOURNAL OF THE CHILEAN CHEMICAL SOCIETY
卷 60, 期 2, 页码 2940-2943

出版社

SOC CHILENA QUIMICA
DOI: 10.4067/S0717-97072015000200017

关键词

Solar cells; Organic-Inorganic Perovskites; Zinc Oxide; Nanorods

资金

  1. Vicerrectoria de Investigacion y Estudios Avanzados, Pontificia Universidad Catolica de Valparaiso

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We report a low-cost, free-hole conductor methylammonium lead iodide CH3NH3PbI3 (perovskite)/ZnO nanorods (NR) heterojunction solar cell. ZnO nanorod arrays were obtained electrochemically onto transparent conducting oxide (fluor doped tin oxide, FTO) from an aqueous solution of zinc acetate. The ZnO NR were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and optical transmittance. Solar cell was fabricated forming the perovskite material onto the ZnO thin film. Spin coating of an equimolar mixture of CH3NH3I and PbI2 in gamma-butyrolactone solution (perovskite precursor solution) leads to CH3NH3PbI3 formation on ZnO NR. A graphite-covered FTO/glass was used as a back contact. The photovoltaic performance of the solar cell was characterized at full sun intensity of 100 mW/cm(2) obtaining a shortcircuit current of 1.5 mA/cm(2), an open circuit voltage of 0.47 V and energy conversion efficiency of 0.16 %.

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