---
_id: '7817'
abstract:
- lang: eng
  text: Abstract The concept of 3D photonic intermediate reflectors for micromorph
    silicon tandem solar cells has been investigated. In thin-film silicon tandem
    solar cells consisting of amorphous and microcrystalline silicon with two junctions
    of a-Si/μc-Si, efficiency enhancements can be achieved by increasing the current
    density in the a-Si top cell. It is one goal to provide an optimized current matching
    at high current densities. For an ideal photon-management between top and bottom
    cell, a spectrally selective intermediate reflective layer (IRL) is necessary,
    which is less dependent of the angle of incidence than state-of-the-art thickness
    dependent massive interlayers. The design, preparation and characterization of
    a 3D photonic thin-film filter device for this purpose has been pursued straight
    forward in simulation and experimental realization. The inverted opal is capable
    of providing a suitable optical band stop with high reflectance and the necessary
    long wavelength transmittance as well and provides further options for improved
    light trapping. We have determined numerically the relative efficiency enhancement
    of an a-Si/μc-Si tandem solar cell using a conductive 3D-photonic crystal. We
    have further fabricated such structures by ZnO-replication of polymeric opals
    using chemical vapour deposition and atomic layer deposition techniques and present
    the results of their characterization. Thin film photonic IRL have been prepared
    at the rear side of a-Si solar cells. Completed with a back contact, this is the
    first step to integrate this novel technology into an a-Si/μc-Si tandem solar
    cell process. The spectral response of the cell is presented and compared with
    reference cells. (© 2008 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim)
article_type: original
author:
- first_name: Andreas
  full_name: Bielawny, Andreas
  last_name: Bielawny
- first_name: Johannes
  full_name: Üpping, Johannes
  id: '64760'
  last_name: Üpping
- first_name: Paul T.
  full_name: Miclea, Paul T.
  last_name: Miclea
- first_name: Ralf B.
  full_name: Wehrspohn, Ralf B.
  last_name: Wehrspohn
- first_name: Carsten
  full_name: Rockstuhl, Carsten
  last_name: Rockstuhl
- first_name: Falk
  full_name: Lederer, Falk
  last_name: Lederer
- first_name: Marius
  full_name: Peters, Marius
  last_name: Peters
- first_name: Lorenz
  full_name: Steidl, Lorenz
  last_name: Steidl
- first_name: Rudolf
  full_name: Zentel, Rudolf
  last_name: Zentel
- first_name: Seung-Mo
  full_name: Lee, Seung-Mo
  last_name: Lee
- first_name: Mato
  full_name: Knez, Mato
  last_name: Knez
- first_name: Andreas
  full_name: Lambertz, Andreas
  last_name: Lambertz
- first_name: Reinhard
  full_name: Carius, Reinhard
  last_name: Carius
citation:
  ama: Bielawny A, Üpping J, Miclea PT, et al. 3D photonic crystal intermediate reflector
    for micromorph thin-film tandem solar cell. <i>physica status solidi (a)</i>.
    2008;205(12):2796-2810. doi:<a href="https://doi.org/10.1002/pssa.200880455">https://doi.org/10.1002/pssa.200880455</a>
  apa: Bielawny, A., Üpping, J., Miclea, P. T., Wehrspohn, R. B., Rockstuhl, C., Lederer,
    F., … Carius, R. (2008). 3D photonic crystal intermediate reflector for micromorph
    thin-film tandem solar cell. <i>Physica Status Solidi (A)</i>, <i>205</i>(12),
    2796–2810. <a href="https://doi.org/10.1002/pssa.200880455">https://doi.org/10.1002/pssa.200880455</a>
  bjps: <b>Bielawny A <i>et al.</i></b> (2008) 3D Photonic Crystal Intermediate Reflector
    for Micromorph Thin-Film Tandem Solar Cell. <i>physica status solidi (a)</i> <b>205</b>,
    2796–2810.
  chicago: 'Bielawny, Andreas, Johannes Üpping, Paul T. Miclea, Ralf B. Wehrspohn,
    Carsten Rockstuhl, Falk Lederer, Marius Peters, et al. “3D Photonic Crystal Intermediate
    Reflector for Micromorph Thin-Film Tandem Solar Cell.” <i>Physica Status Solidi
    (A)</i> 205, no. 12 (2008): 2796–2810. <a href="https://doi.org/10.1002/pssa.200880455">https://doi.org/10.1002/pssa.200880455</a>.'
  chicago-de: 'Bielawny, Andreas, Johannes Üpping, Paul T. Miclea, Ralf B. Wehrspohn,
    Carsten Rockstuhl, Falk Lederer, Marius Peters, u. a. 2008. 3D photonic crystal
    intermediate reflector for micromorph thin-film tandem solar cell. <i>physica
    status solidi (a)</i> 205, Nr. 12: 2796–2810. doi:<a href="https://doi.org/10.1002/pssa.200880455,">https://doi.org/10.1002/pssa.200880455,</a>
    .'
  din1505-2-1: '<span style="font-variant:small-caps;"><span style="font-variant:small-caps;">Bielawny,
    Andreas</span> ; <span style="font-variant:small-caps;">Üpping, Johannes</span>
    ; <span style="font-variant:small-caps;">Miclea, Paul T.</span> ; <span style="font-variant:small-caps;">Wehrspohn,
    Ralf B.</span> ; <span style="font-variant:small-caps;">Rockstuhl, Carsten</span>
    ; <span style="font-variant:small-caps;">Lederer, Falk</span> ; <span style="font-variant:small-caps;">Peters,
    Marius</span> ; <span style="font-variant:small-caps;">Steidl, Lorenz</span> ;
    u. a.</span>: 3D photonic crystal intermediate reflector for micromorph thin-film
    tandem solar cell. In: <i>physica status solidi (a)</i> Bd. 205 (2008), Nr. 12,
    S. 2796–2810'
  havard: A. Bielawny, J. Üpping, P.T. Miclea, R.B. Wehrspohn, C. Rockstuhl, F. Lederer,
    M. Peters, L. Steidl, R. Zentel, S.-M. Lee, M. Knez, A. Lambertz, R. Carius, 3D
    photonic crystal intermediate reflector for micromorph thin-film tandem solar
    cell, Physica Status Solidi (A). 205 (2008) 2796–2810.
  ieee: A. Bielawny <i>et al.</i>, “3D photonic crystal intermediate reflector for
    micromorph thin-film tandem solar cell,” <i>physica status solidi (a)</i>, vol.
    205, no. 12, pp. 2796–2810, 2008.
  mla: Bielawny, Andreas, et al. “3D Photonic Crystal Intermediate Reflector for Micromorph
    Thin-Film Tandem Solar Cell.” <i>Physica Status Solidi (A)</i>, vol. 205, no.
    12, 2008, pp. 2796–810, doi:<a href="https://doi.org/10.1002/pssa.200880455">https://doi.org/10.1002/pssa.200880455</a>.
  short: A. Bielawny, J. Üpping, P.T. Miclea, R.B. Wehrspohn, C. Rockstuhl, F. Lederer,
    M. Peters, L. Steidl, R. Zentel, S.-M. Lee, M. Knez, A. Lambertz, R. Carius, Physica
    Status Solidi (A) 205 (2008) 2796–2810.
  ufg: '<b>Bielawny, Andreas et. al. (2008)</b>: 3D photonic crystal intermediate
    reflector for micromorph thin-film tandem solar cell, in: <i>physica status solidi
    (a)</i> <i>205</i> (<i>12</i>), S. 2796–2810.'
  van: Bielawny A, Üpping J, Miclea PT, Wehrspohn RB, Rockstuhl C, Lederer F, et al.
    3D photonic crystal intermediate reflector for micromorph thin-film tandem solar
    cell. physica status solidi (a). 2008;205(12):2796–810.
date_created: 2022-04-27T09:35:57Z
date_updated: 2023-03-15T13:50:11Z
doi: https://doi.org/10.1002/pssa.200880455
intvolume: '       205'
issue: '12'
keyword:
- 42.70.Qs
- 78.66.Jg
- 78.67.Bf
- 81.07.Bc
- 84.60.Jt
language:
- iso: eng
page: 2796-2810
publication: physica status solidi (a)
status: public
title: 3D photonic crystal intermediate reflector for micromorph thin-film tandem
  solar cell
type: journal_article
user_id: '64760'
volume: 205
year: 2008
...