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  <doc>
    <id>2054</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>5</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2025-04-11</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Loss Analysis of P3 Laser Patterning of Perovskite Solar Cells via Hyperspectral Photoluminescence Imaging</title>
    <abstract language="eng">Upscaling perovskite solar cells and modules requires precise laser patterning for series interconnection and spatial characterization of cell parameters to understand laser–material interactions and their impact on performance. This study investigates the use of nanosecond (ns) and picosecond (ps) laser pulses at varying fluences for the P3 patterning step of perovskite solar cells. Hyperspectral photoluminescence (PL) imaging was employed to map key parameters such as optical bandgap energy, Urbach energy, and shunt resistance. The mappings were correlated with electrical measurements, revealing that both ns and ps lasers can be utilized for effective series interconnections with minimal performance losses at optimized fluences. Our findings provide a deeper understanding of fluence-dependent effects in P3 patterning. Moreover, the results demonstrate that the process window is robust, allowing for reasonable cell performance even with deviations from optimal parameters. This robustness, coupled with the scalability of the laser patterning process, emphasize its suitability for industrial module production.</abstract>
    <parentTitle language="eng">Solar</parentTitle>
    <identifier type="issn">2673-9941</identifier>
    <identifier type="doi">10.3390/solar5020013</identifier>
    <identifier type="urn">urn:nbn:de:kobv:523-20545</identifier>
    <enrichment key="opus.import.date">2025-05-08T16:45:02+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">deepgreen</enrichment>
    <enrichment key="opus.import.file">attachment; filename=deposit.zip</enrichment>
    <enrichment key="opus.import.checksum">d251439f079ada930547179b55f27e6f</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Christof Schultz</author>
    <author>Markus Fenske</author>
    <author>Nicolas Otto</author>
    <author>Laura-Isabelle Dion-Bertrand</author>
    <author>Guillaume Gélinas</author>
    <author>Stéphane Marcet</author>
    <author>Janardan Dagar</author>
    <author>Rutger Schlatmann</author>
    <author>Eva Unger</author>
    <author>Bert Stegemann</author>
    <subject>
      <language>eng</language>
      <type>swd</type>
      <value>Photoluminescence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>photoluminescence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>perovskite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>laser</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ablation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>photovoltaic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>series interconnection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>solar module</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>thin film</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>hyperspectral</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Perovskite</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Laser</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Photovoltaic</value>
    </subject>
    <collection role="institutes" number="01">FB1: Ingenieurwissenschaften I - Energie u. Informationen</collection>
    <collection role="OpenAIRE" number="">OpenAIRE</collection>
    <thesisPublisher>Hochschule für Technik und Wirtschaft Berlin</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-htw/files/2054/solar-05-00013.pdf</file>
  </doc>
  <doc>
    <id>2172</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>56250</pageFirst>
    <pageLast>56255</pageLast>
    <pageNumber/>
    <edition/>
    <issue>40</issue>
    <volume>17</volume>
    <type>article</type>
    <publisherName>American Chemical Society</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2025-09-25</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Improving Perovskite/CIGS Tandem Solar Cells for Higher Power Conversion Efficiency through Light Management and Bandgap Engineering</title>
    <abstract language="eng">Perovskite and chalcopyrite materials are excellent absorbers for highly efficient, all-thin-film tandem solar cells. This work presents a certified world record for such a device, achieving a power conversion efficiency of 24.6 ± 1.1% under steady-state conditions. The best IV parameters extracted from certified current–voltage measurements presented a short-circuit current density of around 19.3 mA/cm 2 , an open-circuit voltage of 1.765 V, and a fill factor of 71.8%. In comparison to our previous record, the current density improved considerably, mainly due to the lowering of the bandgap of the bottom subcell and the improved optics of the top perovskite cell.</abstract>
    <parentTitle language="eng">ACS Applied Materials &amp; Interfaces</parentTitle>
    <identifier type="issn">1944-8244</identifier>
    <identifier type="issn">1944-8252</identifier>
    <identifier type="doi">10.1021/acsami.5c15458</identifier>
    <identifier type="urn">urn:nbn:de:kobv:523-21725</identifier>
    <enrichment key="opus.import.date">2025-10-09T23:45:44+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">deepgreen</enrichment>
    <enrichment key="opus.import.file">attachment; filename=deposit.zip</enrichment>
    <enrichment key="opus.import.checksum">50d1c48f0b695d043989a6628a248471</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Guillermo Farias-Basulto</author>
    <author>Thede Mehlhop</author>
    <author>Nicolas J. Otto</author>
    <author>Tobias Bertram</author>
    <author>Klaus Jäger</author>
    <author>Stefan Gall</author>
    <author>Nikolaus Weinberger</author>
    <author>Rutger Schlatmann</author>
    <author>Iver Lauermann</author>
    <author>Reiner Klenk</author>
    <author>Emil List-Kratochvil</author>
    <author>Christian A. Kaufmann</author>
    <subject>
      <language>eng</language>
      <type>swd</type>
      <value>Photovoltaic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>photovoltaic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>thin-film</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>solar Cell</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CIGS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>perovskite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>tandem</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>record</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Solar Cell</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>CIGS solar cells</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Perovskite</value>
    </subject>
    <collection role="institutes" number="01">FB1: Ingenieurwissenschaften I - Energie u. Informationen</collection>
    <collection role="OpenAIRE" number="">OpenAIRE</collection>
    <thesisPublisher>Hochschule für Technik und Wirtschaft Berlin</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-htw/files/2172/am5c15458.pdf</file>
  </doc>
</export-example>
