<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>20403</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>49</pageFirst>
    <pageLast>52</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>411</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2017-11-01</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Room temperature atomic layer deposited Al₂O₃ on CH₃NH₃PbI₃ characterized by synchrotron-based X-ray photoelectron spectroscopy</title>
    <abstract language="eng">An ultrathin Al₂O₃ film deposited on methylammonium lead triiodide (CH₃NH₃PbI₃) perovskite has the capability to suppress the carrier recombination process and improve the perovskite solar cells efficiency&#13;
and stability. However, annealing at temperatures higher than 85°C degrades the CH₃NH₃PbI₃ perovskite film. The X-ray photoelectron spectroscopy study performed in this work indicates that it is possible to grow Al₂O₃ by atomic layer deposition on the perovskite at room temperature, however, besides pure Al₂O₃ some OH groups are found and the creation of lead and iodine oxides at the Al₂O₃/CH₃NH₃PbI₃ interface takes place.</abstract>
    <parentTitle language="eng">Nuclear Instruments and Methods in Physics Research B</parentTitle>
    <identifier type="doi">10.1016/j.nimb.2017.01.082</identifier>
    <identifier type="issn">0168-583X</identifier>
    <identifier type="issn">1872-9584</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <author>
      <firstName>Małgorzata</firstName>
      <lastName>Kot</lastName>
    </author>
    <submitter>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </submitter>
    <author>
      <firstName>Chittaranjan</firstName>
      <lastName>Das</lastName>
    </author>
    <author>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </author>
    <author>
      <firstName>Konrad</firstName>
      <lastName>Wojciechowski</lastName>
    </author>
    <author>
      <firstName>Henry J.</firstName>
      <lastName>Snaith</lastName>
    </author>
    <author>
      <firstName>Dieter</firstName>
      <lastName>Schmeißer</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Synchrotron-based X-ray photoelectron spectroscopy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Perovskite solar cells</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Atomic layer deposition</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Al₂O₃</value>
    </subject>
    <collection role="institutes" number="1503">FG Angewandte Physik und Halbleiterspektroskopie</collection>
  </doc>
  <doc>
    <id>32928</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1017</pageFirst>
    <pageLast>1024</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>9</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-02-27</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">MAPbCl3 Light Absorber for Highest Voltage Perovskite Solar Cells</title>
    <abstract language="eng">Perovskite solar cells (PSCs) excel in achieving high open-circuit voltages (VOC) for narrow bandgaps (∼1.6 eV) but face challenges with wide-bandgap perovskites, like methylammonium lead trichloride (MAPbCl3) with a 3.03 eV bandgap. These materials are transparent in visible absorbing ultraviolet (UV) light. However, achieving uniform film crystallization remains a hurdle. Here, we enhance MAPbCl3 crystallization by manipulating annealing atmospheres (nitrogen, air, and MACl vapor). Excess MACl vapor improves surface coverage, which is crucial for film stability. We demonstrate that the microstructure of the perovskite film, including surface morphology, grain boundaries, and interfaces, can affect the photovoltaic properties. The subsequently obtained VOC of 1.78 V is the highest recorded for single-junction PSCs to the best of our knowledge. Surprisingly, the conventional hole-transport layer spiro-OMeTAD, optimized for narrow bandgaps, sustains such high voltages. Photoluminescence measurements reveal a trap-assisted recombination peak at 1.65 eV, indicating deep traps as significant to voltage loss in MAPbCl3.</abstract>
    <parentTitle language="eng">ACS Energy Letters</parentTitle>
    <identifier type="issn">2380-8195</identifier>
    <identifier type="doi">10.1021/acsenergylett.3c02777</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Waqas</firstName>
      <lastName>Zia</lastName>
    </author>
    <submitter>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </submitter>
    <author>
      <firstName>Mahdi</firstName>
      <lastName>Malekshahi Byranvand</lastName>
    </author>
    <author>
      <firstName>Toby</firstName>
      <lastName>Rudolph</lastName>
    </author>
    <author>
      <firstName>Monika</firstName>
      <lastName>Rai</lastName>
    </author>
    <author>
      <firstName>Małgorzata</firstName>
      <lastName>Kot</lastName>
    </author>
    <author>
      <firstName>Chittaranjan</firstName>
      <lastName>Das</lastName>
    </author>
    <author>
      <firstName>Mayank</firstName>
      <lastName>Kedia</lastName>
    </author>
    <author>
      <firstName>Mohammadreza</firstName>
      <lastName>Zohdi</lastName>
    </author>
    <author>
      <firstName>Weiwei</firstName>
      <lastName>Zuo</lastName>
    </author>
    <author>
      <firstName>Vishal</firstName>
      <lastName>Yeddu</lastName>
    </author>
    <author>
      <firstName>Makhsud I.</firstName>
      <lastName>Saidaminov</lastName>
    </author>
    <author>
      <firstName>Jan Ingo</firstName>
      <lastName>Flege</lastName>
    </author>
    <author>
      <firstName>Thomas</firstName>
      <lastName>Kirchartz</lastName>
    </author>
    <author>
      <firstName>Michael</firstName>
      <lastName>Saliba</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Perovskite solar cells</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>methylammonium lead trichloride (MAPbCl3)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>uniform film crystallization</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>manipulation of annealing atmospheres</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>trap-assisted recombination</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>microstructure</value>
    </subject>
    <collection role="institutes" number="1503">FG Angewandte Physik und Halbleiterspektroskopie</collection>
  </doc>
  <doc>
    <id>31392</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>39</issue>
    <volume>35</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2023-10-06</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Coordination Chemistry as a Universal Strategy for a Controlled Perovskite Crystallization</title>
    <abstract language="eng">The most efficient and stable perovskite solar cells (PSCs) are made from a complex mixture of precursors. Typically, to then form a thin film, an extreme oversaturation of the perovskite precursor is initiated to trigger nucleation sites, e.g., by vacuum, an airstream, or a so-called antisolvent. Unfortunately, most oversaturation triggers do not expel the lingering (and highly coordinating) dimethyl sulfoxide (DMSO), which is used as a precursor solvent, from the thin films; this detrimentally affects long-term stability. In this work, (the green) dimethyl sulfide (DMS) is introduced as a novel nucleation trigger for perovskite films combining, uniquely, high coordination and high vapor pressure. This gives DMS a universal scope: DMS replaces other solvents by coordinating more strongly and removes itself once the film formation is finished. To demonstrate this novel coordination chemistry approach, MAPbI3 PSCs are processed, typically dissolved in hard-to-remove (and green) DMSO achieving 21.6% efficiency, among the highest reported efficiencies for this system. To confirm the universality of the strategy, DMS is tested for FAPbI3 as another composition, which shows higher efficiency of 23.5% compared to 20.9% for a device fabricated with chlorobenzene. This work provides a universal strategy to control perovskite crystallization using coordination chemistry, heralding the revival of perovskite compositions with pure DMSO.</abstract>
    <parentTitle language="eng">Advanced Materials</parentTitle>
    <identifier type="issn">0935-9648</identifier>
    <identifier type="issn">1521-4095</identifier>
    <identifier type="doi">10.1002/adma.202302889</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Artikelnummer">2302889</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Weiwei</firstName>
      <lastName>Zuo</lastName>
    </author>
    <submitter>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </submitter>
    <author>
      <firstName>Mahdi</firstName>
      <lastName>Malekshahi Byranvand</lastName>
    </author>
    <author>
      <firstName>Tim</firstName>
      <lastName>Kodalle</lastName>
    </author>
    <author>
      <firstName>Mohammadreza</firstName>
      <lastName>Zohdi</lastName>
    </author>
    <author>
      <firstName>Jaekeun</firstName>
      <lastName>Lim</lastName>
    </author>
    <author>
      <firstName>Brian</firstName>
      <lastName>Carlsen</lastName>
    </author>
    <author>
      <firstName>Theresa Magorian</firstName>
      <lastName>Friedlmeier</lastName>
    </author>
    <author>
      <firstName>Małgorzata</firstName>
      <lastName>Kot</lastName>
    </author>
    <author>
      <firstName>Chittaranjan</firstName>
      <lastName>Das</lastName>
    </author>
    <author>
      <firstName>Jan Ingo</firstName>
      <lastName>Flege</lastName>
    </author>
    <author>
      <firstName>Wansheng</firstName>
      <lastName>Zong</lastName>
    </author>
    <author>
      <firstName>Antonio</firstName>
      <lastName>Abate</lastName>
    </author>
    <author>
      <firstName>Carolin M.</firstName>
      <lastName>Sutter‐Fella</lastName>
    </author>
    <author>
      <firstName>Meng</firstName>
      <lastName>Li</lastName>
    </author>
    <author>
      <firstName>Michael</firstName>
      <lastName>Saliba</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Perovskite solar cells</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>nucleation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>dimethyl sulfide ()DMS) solvent</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>coordination chemistry</value>
    </subject>
    <collection role="institutes" number="1503">FG Angewandte Physik und Halbleiterspektroskopie</collection>
  </doc>
  <doc>
    <id>30920</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2603</pageFirst>
    <pageLast>2610</pageLast>
    <pageNumber>8</pageNumber>
    <edition/>
    <issue/>
    <volume>8</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2023-05-15</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Light Makes Right: Laser Polishing for Surface Modification of Perovskite Solar Cells</title>
    <abstract language="eng">Interface engineering is a common strategy for passivating surface defects to attain open circuit voltages (Voc) in perovskite solar cells (PSCs). In this work, we introduce the concept of polishing a perovskite thin-film surface using a nanosecond (ns) pulsed ultraviolet laser to reduce surface defects, such as dangling bonds, undesirable phases, and suboptimal stoichiometry. A careful control of laser energy and scanning speed improves the photophysical properties of the surface without compromising the thickness. Using laser polishing, a Voc of 1.21 V is achieved for planar PSCs with a triple cation composition, showing an improved perovskite/hole transport interface by mitigating surface recombination losses. We measure an efficiency boost from 18.0% to 19.3% with improved stability of up to 1000 h. The results open the door to a new class of surface modification using lasers for interface passivation in well-controllable, automated, scalable, and solvent-free surface treatments.</abstract>
    <parentTitle language="eng">ACS Energy Letters</parentTitle>
    <identifier type="issn">2380-8195</identifier>
    <identifier type="doi">10.1021/acsenergylett.3c00469</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="RelationnotEU">KK5087602BR1</enrichment>
    <enrichment key="BTUfunderNamenotEU">Bundesministerium für Wirtschaft und Klimaschutz der Bundesrepublik Deutschland (BMWK) ZIM</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">4 Künstliche Intelligenz und Sensorik / Artificial Intelligence and Sensor Technology</enrichment>
    <author>
      <firstName>Mayank</firstName>
      <lastName>Kedia</lastName>
    </author>
    <submitter>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </submitter>
    <author>
      <firstName>Monika</firstName>
      <lastName>Rai</lastName>
    </author>
    <author>
      <firstName>Himanshu</firstName>
      <lastName>Phirke</lastName>
    </author>
    <author>
      <firstName>Clara A.</firstName>
      <lastName>Aranda</lastName>
    </author>
    <author>
      <firstName>Chittaranjan</firstName>
      <lastName>Das</lastName>
    </author>
    <author>
      <firstName>Vladimir</firstName>
      <lastName>Chirvony</lastName>
    </author>
    <author>
      <firstName>Stephan</firstName>
      <lastName>Boehringer</lastName>
    </author>
    <author>
      <firstName>Małgorzata</firstName>
      <lastName>Kot</lastName>
    </author>
    <author>
      <firstName>Mahdi</firstName>
      <lastName>Malekshahi Byranvand</lastName>
    </author>
    <author>
      <firstName>Jan Ingo</firstName>
      <lastName>Flege</lastName>
    </author>
    <author>
      <firstName>Alex</firstName>
      <lastName>Redinger</lastName>
    </author>
    <author>
      <firstName>Michael</firstName>
      <lastName>Saliba</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Perovskite solar cells</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>laser polishing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>perovskite/hole transport interface</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>surface defects</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>recombination losses</value>
    </subject>
    <collection role="institutes" number="1503">FG Angewandte Physik und Halbleiterspektroskopie</collection>
  </doc>
</export-example>
