Study of buffer layer design in single junction solar cells

Two different approaches to reduce the influence of the solar cell interface have been explored using the authors´ AMPS (Analysis of Microelectronics and Photonic Structures) computer program. The two particular approaches they considered both focus on shaping the field at the p layer/absorber interface between a-SiC:H and a-Si:H to enhance p-i-n solar cell performance and in both cases they assume this can be done without introducing any new defects at the interface. The two approaches examined are: (1) the bandgap grading buffer layer; and (2) the doped buffer layer