The effects of fabrication temperature on current-voltage characteristics and energy efficiencies of quantum dot sensitized ZnOH-GO hybrid solar cells

Autor:	Naing Tint, S. M. Z. Islam, Lingyan Shi, Taposh Gayen, Teresa J. Bandosz, Mykola Seredych, Robert R. Alfano
Rok vydání:	2014
Předmět:	Photocurrent Fabrication Materials science business.industry Quantum dot Photovoltaic system General Physics and Astronomy Optoelectronics Hybrid solar cell Photovoltaic effect Quantum dot solar cell Photoelectric effect business
Zdroj:	Journal of Applied Physics. 116:173102
ISSN:	1089-7550 0021-8979
Popis:	The effects of fabrication temperature are investigated on the performance of CdSe quantum dot (QD)-sensitized hybrid solar cells of the composite material of zinc (hydr)oxide (ZnOH-GO)with 2 wt. % graphite oxide. The current-voltage (I-V) and photo-current measurements show that higher fabrication temperatures yield greater photovoltaic power conversion efficiencies that essentially indicate more efficient solar cells. Two Photon Fluorescence images show the effects of temperature on the internal morphologies of the solar devices based on such materials. The CdSe-QD sensitized ZnOH-GO hybrid solar cells fabricated at 450 °C showing conversion of ∼10.60% under a tungsten lamp (12.1 mW/cm2) are reported here, while using potassium iodide as an electrolyte. The output photocurrent, I (μA) with input power, P (mW/cm2) is found to be superlinear, showing a relation of I = Pn, where n = 1.4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::284f3d11bb5cf86628b092e141ba0358 https://doi.org/10.1063/1.4899203 Zobrazit plný text záznamu