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@ARTICLE{Agbo:811670,
      author       = {Agbo, Solomon. N. and Merdzhanova, Tsvetelina and Yu,
                      Shicheng and Tempel, Hermann and Kungl, Hans and Eichel,
                      Rüdiger-A. and Rau, Uwe and Astakhov, Oleksandr},
      title        = {{D}evelopment towards cell-to-cell monolithic integration
                      of a thin-film solar cell and lithium-ion accumulator},
      journal      = {Journal of power sources},
      volume       = {327},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2016-04056},
      pages        = {340 - 344},
      year         = {2016},
      abstract     = {This work focuses on the potentials of monolithic
                      integrated thin-film silicon solar cell and lithium ion cell
                      in a simple cell-to-cell integration without any control
                      electronics as a compact power solution for portable
                      electronic devices. To demonstrate this we used
                      triple-junction thin-film silicon solar cell connected
                      directly to a lithium ion battery cell to charge the battery
                      and in turn discharge the battery through the solar cell.
                      Our results show that with appropriate voltage matching the
                      solar cell provides efficient charging for lab-scale lithium
                      ion storage cell. Despite the absence of any control
                      electronics the discharge rate of the Li-ion cell through
                      the non-illuminated solar cell can be much lower than the
                      charging rate when the current voltage (IV) characteristics
                      of the solar cell is matched properly to the
                      charge-discharge characteristics of the battery. This
                      indicates good sustainability of the ultimately simple
                      integrated device. At the maximum power point, solar
                      energy-to-battery charging efficiency of $8.5\%$ which is
                      nearly the conversion efficiency of the solar cell was
                      obtained indicating potential for loss-free operation of the
                      photovoltaic (PV)-battery integration. For the rest of the
                      charging points, an average of $8.0\%$ charging efficiency
                      was obtained.},
      cin          = {IEK-5 / IEK-9 / JARA-ENERGY},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-5-20101013 / I:(DE-Juel1)IEK-9-20110218 /
                      $I:(DE-82)080011_20140620$},
      pnm          = {131 - Electrochemical Storage (POF3-131) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000383003600037},
      doi          = {10.1016/j.jpowsour.2016.07.073},
      url          = {https://juser.fz-juelich.de/record/811670},
}