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@ARTICLE{Chime:1024207,
      author       = {Chime, U. and Duan, W. and Lambertz, A. and Bittkau, K. and
                      Lauterbach, V. and Ding, K. and Rau, U. and Merdzhanova, T.
                      and Astakhov, O.},
      title        = {{T}hin silicon heterojunction solar cells in perovskite
                      shadow: {B}ottom cell prospective},
      journal      = {Solar energy materials $\&$ solar cells},
      volume       = {270},
      issn         = {0927-0248},
      address      = {Amsterdam [u.a.]},
      publisher    = {NH, Elsevier},
      reportid     = {FZJ-2024-02023},
      pages        = {112813 -},
      year         = {2024},
      abstract     = {Perovskite/Silicon (Pero-Si) tandem with silicon
                      heterojunction (SHJ) bottom cells is a promising highly
                      efficient concept, which in the case of mass production will
                      likely rely on the same wafer feedstock as the single
                      junction Si solar cells. The thickness of these wafers is
                      constantly decreasing for economic and sustainability
                      reasons. We forecast that Si bottom cells for mass produced
                      Pero-Si tandems will be based on wafers thinner than 100
                      μm. In our work we study challenges and opportunities
                      related to this likely wafer thinning for the performance of
                      the SHJ bottom cells operating in Perovskite shadow. We
                      study SHJ cells prepared on 80 μm thick wafers in
                      comparison to the reference cells based on 135 μm thick
                      wafers addressing two issues: passivation and light
                      management. Effects of passivating layer thickness, back
                      reflector and antireflection coating are studied under
                      AM1.5G standard test conditions, attenuated AM1.5G
                      irradiance, and under Perovskite-filtered spectrum. We show
                      that major wafer thickness reduction of $40\%$ turns to only
                      approx. $0.35\%abs$ loss in the bottom cell efficiency. This
                      minor loss can be reduced even further using highly
                      technological ITO/MgF2/Ag back reflector and MgF2
                      anti-reflection coating. Our work shows that significant
                      potential for Pero-Si tandems is waiting to be explored in
                      the perovskite shadow from the SHJ bottom cell perspective.},
      cin          = {IEK-5},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-5-20101013},
      pnm          = {1213 - Cell Design and Development (POF4-121) / DECADE -
                      DistributEd Chemicals And fuels production from CO2 in
                      photoelectrocatalytic DEvices (862030)},
      pid          = {G:(DE-HGF)POF4-1213 / G:(EU-Grant)862030},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001217623800001},
      doi          = {10.1016/j.solmat.2024.112813},
      url          = {https://juser.fz-juelich.de/record/1024207},
}