examples/notebooks/MJ_solar_cell_PDD_solver.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import matplotlib.pyplot as plt\n",
    "import numpy as np"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from solcore.solar_cell import SolarCell, default_GaAs\n",
    "from solcore.structure import Layer, Junction\n",
    "from solcore import si\n",
    "from solcore import material\n",
    "from solcore.light_source import LightSource\n",
    "from solcore.solar_cell_solver import solar_cell_solver"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "TODO The purpose of this example needs to be clarified. It is messy"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "T = 298"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "substrate = material('GaAs')(T=T)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "def AlGaAs(T):\n",
    "    # We create the other materials we need for the device\n",
    "    window = material('AlGaAs')(T=T, Na=5e24, Al=0.8)\n",
    "    p_AlGaAs = material('AlGaAs')(T=T, Na=1e24, Al=0.4)\n",
    "    n_AlGaAs = material('AlGaAs')(T=T, Nd=8e22, Al=0.4)\n",
    "    bsf = material('AlGaAs')(T=T, Nd=2e24, Al=0.6)\n",
    "    output = Junction([Layer(width=si('30nm'), material=window, role=\"Window\"),\n",
    "                       Layer(width=si('150nm'), material=p_AlGaAs, role=\"Emitter\"),\n",
    "                       Layer(width=si('1000nm'), material=n_AlGaAs, role=\"Base\"),\n",
    "                       Layer(width=si('200nm'), material=bsf, role=\"BSF\")], sn=1e6, sp=1e6, T=T, kind='PDD')\n",
    "    return output"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "my_solar_cell = SolarCell([AlGaAs(T), default_GaAs(T)], T=T, R_series=0, substrate=substrate)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "Vin = np.linspace(-2, 2.61, 201)\n",
    "V = np.linspace(0, 2.6, 300)\n",
    "wl = np.linspace(350, 1000, 301) * 1e-9\n",
    "light_source = LightSource(source_type='standard', version='AM1.5g', x=wl, output_units='photon_flux_per_m',\n",
    "                           concentration=1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "solar_cell_solver(my_solar_cell, 'equilibrium')\n",
    "\n",
    "plt.figure(1)\n",
    "for j in my_solar_cell.junction_indices:\n",
    "    zz = my_solar_cell[j].equilibrium_data.Properties['x'] + my_solar_cell[j].offset\n",
    "    n = my_solar_cell[j].equilibrium_data.Properties['Nd']\n",
    "    p = my_solar_cell[j].equilibrium_data.Properties['Na']\n",
    "    plt.semilogy(zz, n, 'b')\n",
    "    plt.semilogy(zz, p, 'r')\n",
    "\n",
    "    zz = my_solar_cell[j].equilibrium_data.Bandstructure['x'] + my_solar_cell[j].offset\n",
    "    n = my_solar_cell[j].equilibrium_data.Bandstructure['n']\n",
    "    p = my_solar_cell[j].equilibrium_data.Bandstructure['p']\n",
    "    plt.semilogy(zz, n, 'b--')\n",
    "    plt.semilogy(zz, p, 'r--')\n",
    "\n",
    "plt.xlabel('Position (m)')\n",
    "plt.ylabel('Carrier density (m$^{-3}$)')\n",
    "\n",
    "plt.show()"
   ]
  }
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