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3D photonic crystal intermediate reflector for micromorph thin-film tandem solar cell
Physica status solidi. A, Applications and materials science, 2008-12, Vol.205 (12), p.2796-2810
Bielawny, Andreas
Üpping, Johannes
Miclea, Paul T.
Wehrspohn, Ralf B.
Rockstuhl, Carsten
Lederer, Falk
Peters, Marius
Steidl, Lorenz
Zentel, Rudolf
Lee, Seung-Mo
Knez, Mato
Lambertz, Andreas
Carius, Reinhard
2008
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Bielawny, Andreas
Üpping, Johannes
Miclea, Paul T.
Wehrspohn, Ralf B.
Rockstuhl, Carsten
Lederer, Falk
Peters, Marius
Steidl, Lorenz
Zentel, Rudolf
Lee, Seung-Mo
Knez, Mato
Lambertz, Andreas
Carius, Reinhard
Titel
3D photonic crystal intermediate reflector for micromorph thin-film tandem solar cell
Ist Teil von
Physica status solidi. A, Applications and materials science, 2008-12, Vol.205 (12), p.2796-2810
Ort / Verlag
Berlin: WILEY-VCH Verlag
Erscheinungsjahr
2008
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
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)
Sprache
Englisch
Identifikatoren
ISSN: 1862-6300, 0031-8965
eISSN: 1862-6319
DOI: 10.1002/pssa.200880455
Titel-ID: cdi_proquest_miscellaneous_36280928
Format
–
Schlagworte
42.70.Qs
,
78.66.Jg
,
78.67.Bf
,
81.07.Bc
,
84.60.Jt
,
Applied sciences
,
Energy
,
Exact sciences and technology
,
Natural energy
,
Photovoltaic conversion
,
Solar cells. Photoelectrochemical cells
,
Solar energy
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