@article{
  author = {Shahraki, Mojtaba , Ghadrdan, Majid},
  title = {Efficiency Improvement of InGaP/SiGe Tandem Solar Cell Using Si0.18Ge0.82 Graded Buffer Regions },
  journal = {Journal of Optoelectronical Nanostructures},
  year = {2024},
  volume = {9},
  number = {3},
  pages = {1-18},
  doi = {}
}