# Exercise Basic 8.1-1

# Exponential Growth

| The output of the solar cell industry in 2006 - 2008 grew by 40 % per year. Let's assume that all solar cells installed in 2007 produced a total energy of 0.1 GW /year.
| Calculate (and plot) the installed power as a function of time up to 2050 for growth rates of 20 %, 30 %, 40 %, and 50 %
|  | What is the proper equation?
|  | What follows from the results with respect to the world-wide power scenario as described in the link??
|  | Plot the demand for Si, assuming that a standard (1000 x 1000 x 0.1) mm3 Si solar cell generates 10 W on average. Will there be enough Si? How do the amounts of Si needed compare to other essential raw materials?

| Solution

With frame

Joules, Watts and kWhrs

Solution to Exercise 8.1-1: Exponential Growth

Solution to Exercise 8.3-1: Making In-Situ Series Connections

© H. Föll (Semiconductor Technology - Script)