Evaluating The Performance Of Organic Solar Cell ( Osc ) Is The Power Conversion Efficiency Essay

865 WordsMay 6, 20164 Pages
The main and most important index of evaluating the performance of organic solar cell (OSC) is the power conversion efficiency (PCE), η. It is based on three other parameters, they are open circuit voltage Voc, short circuit current density Jsc, and fill factor FF. The power conversion efficiency is evaluated with respect to standard reporting conditions (SRC) defined by temperature, spectral irradiance, and total irradiance. 23 The SRC for rating the performance of terrestrial PV cells are the following: 1000 W∙m-2 irradiance, AM 1.5 (AM: air mass) global reference spectrum, and 25 °C cell temperature. 24-28 The PCE (η) of a PV cell is given as30 Where Pmax is the measured peak power of the cell, A is the effective device area, and Etot is the total incident irradiance. For equation (1) to give a unique efficiency, Etot must be given with respect to a reference spectral irradiance. The current reference spectrum adopted by the international terrestrial photovoltaics community is given in international electrotechnical commission (IEC) Standard 60904-3 and American society for testing and materials (ASTM) Standard G173.28, 29 As a simplification of equation (1), PCE can also be calculated by the following equation, η=(V_oc×J_sc×FF)/P_in (2) of which,Voc represent for open circuit voltage, Jsc means short circuit current density, and FF means fill factor. Pin is the input energy, typically radiated by the sun. The followings

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