def test_BL_correction(): wl = np.linspace(800, 950, 4) * 1e-9 GaAs = material("GaAs")() thick_cell = SolarCell([Layer(material=GaAs, width=si("20um"))]) opts = State() opts.position = None prepare_solar_cell(thick_cell, opts) position = np.arange(0, thick_cell.width, 1e-9) opts.position = position opts.recalculate_absorption = True opts.no_back_reflexion = False opts.BL_correction = False opts.wavelength = wl solve_tmm(thick_cell, opts) no_corr = thick_cell.absorbed opts.BL_correction = True solve_tmm(thick_cell, opts) with_corr = thick_cell.absorbed assert with_corr == approx( np.array([6.71457872e-01, 6.75496354e-01, 2.09738887e-01, 0])) assert no_corr == approx( np.array([6.71457872e-01, 6.75496071e-01, 2.82306407e-01, 0]))
def test_inc_coh_tmm(): GaInP = material("GaInP")(In=0.5) GaAs = material("GaAs")() Ge = material("Ge")() optical_struct = SolarCell([ Layer(material=GaInP, width=si("5000nm")), Layer(material=GaAs, width=si("200nm")), Layer(material=GaAs, width=si("5um")), Layer(material=Ge, width=si("50um")), ]) wl = np.linspace(400, 1200, 5) * 1e-9 options = State() options.wavelength = wl options.optics_method = "TMM" options.no_back_reflection = False options.BL_correction = True options.recalculate_absorption = True c_list = [ ["c", "c", "c", "c"], ["c", "c", "c", "i"], ["c", "i", "i", "c"], ["i", "i", "i", "i"], ] results = [] for i1, cl in enumerate(c_list): options.coherency_list = cl solar_cell_solver(optical_struct, "optics", options) results.append(optical_struct.absorbed) A_calc = np.stack(results) A_data = np.array( [[0.5742503, 0.67956899, 0.73481184, 0.725372, 0.76792856], [0.5742503, 0.67956899, 0.73481184, 0.725372, 0.76792856], [0.5742503, 0.67956899, 0.73474943, 0.70493469, 0.70361194], [0.5742503, 0.67956899, 0.70927724, 0.71509221, 0.71592772]]) assert A_calc == approx(A_data)
default_options.light_source = LightSource(source_type='standard', version='AM1.5g', x=default_options.wavelength, output_units='photon_flux_per_m') # IV control default_options.voltages = np.linspace(0, 1.2, 100) default_options.mpp = False default_options.light_iv = False default_options.internal_voltages = np.linspace(-6, 4, 1000) default_options.position = None default_options.radiative_coupling = False # Optics control default_options.optics_method = 'BL' default_options.recalculate_absorption = False default_options = merge_dicts(default_options, ASC.db_options, PDD.pdd_options, rcwa_options) def solar_cell_solver(solar_cell, task, user_options=None): """ Solves the properties of a solar cell object, either calculating its optical properties (R, A and T), its quantum efficiency or its current voltage characteristics in the dark or under illumination. The general options for the solvers are passed as dicionaries. :param solar_cell: A solar_cell object :param task: Task to perform. It has to be "optics", "iv", "qe", "equilibrium" or "short_circuit". The last two only work for PDD junctions :param user_options: A dictionary containing the options for the solver, which will overwrite the default options. :return: None """ if type(user_options) in [State, dict]: options = merge_dicts(default_options, user_options)
Layer(material=GaAs, width=si("200nm")), Layer(material=GaAs, width=si("5um")), ], kind="DA", ), Layer(material=Ge, width=si("50um")), ]) wl = np.linspace(250, 1700, 300) * 1e-9 options = State() options.wavelength = wl options.optics_method = "TMM" options.no_back_reflection = False options.BL_correction = True options.recalculate_absorption = True options.positions = [1e-8, 1e-9, 1e-8, 1e-7] options.theta = 0 c_list = [ ["c", "c", "c", "c"], ["c", "c", "c", "i"], ["c", "i", "i", "c"], ["i", "i", "i", "i"], ] titles = [ "All coherent", "Bottom Ge layer explicity incoherent", "Both layers of GaAs junction incoherent", "All layers incoherent",