The Schottky-junction is an attempt to increase the efficiency of solar cells by introducing an impurity energy level in the band gap.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: The Schottky-junction is an attempt to increase the efficiency of solar cells by introducing an impurity energy level in the band gap. ### Response: .