<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>26276</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>5722</pageFirst>
    <pageLast>5730</pageLast>
    <pageNumber/>
    <edition/>
    <issue>21</issue>
    <volume>13</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-11-10</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">In situ Near-Ambient Pressure X-ray Photoelectron Spectroscopy Reveals the Influence of Photon Flux and Water on the Stability of Halide Perovskite</title>
    <abstract language="eng">For several years, scientists have been trying to understand the mechanisms that reduce the long‐term stability of perovskite solar cells. In this work, we examined the effect of water and photon flux on the stability of CH3NH3PbI3 perovskite films and solar cells using in situ near‐ambient pressure X‐ray photoelectron spectroscopy (NAP‐XPS), field emission scanning electron microscopy (FESEM), and current density–voltage (J–V) characterization. The used amount of water vapor (up to 1 mbar) had a negligible impact on the perovskite film. The higher the photon flux, the more prominent were the changes in the NAP‐XPS and FESEM data; also, a faster decline in power conversion efficiency (PCE) and a more substantial hysteresis in the J‐V characteristics were observed. Based on our results, it can be concluded that the PCE decrease originates from the creation of Frenkel pair defects in the perovskite film under illumination. The stronger the illumination, the higher the number of Frenkel defects, leading to a faster PCE decline and more substantial hysteresis in the J‐V sweeps.</abstract>
    <parentTitle language="eng">ChemSusChem</parentTitle>
    <identifier type="doi">10.1002/cssc.202001527</identifier>
    <identifier type="issn">1864-5631</identifier>
    <identifier type="issn">1864-564X</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</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>Małgorzata</firstName>
      <lastName>Kot</lastName>
    </author>
    <submitter>
      <firstName>Karsten</firstName>
      <lastName>Henkel</lastName>
    </submitter>
    <author>
      <firstName>Lukas</firstName>
      <lastName>Kegelmann</lastName>
    </author>
    <author>
      <firstName>Hans</firstName>
      <lastName>Köbler</lastName>
    </author>
    <author>
      <firstName>Mykhailo</firstName>
      <lastName>Vorokhta</lastName>
    </author>
    <author>
      <firstName>Carlos</firstName>
      <lastName>Escudero</lastName>
    </author>
    <author>
      <firstName>Peter</firstName>
      <lastName>Kúš</lastName>
    </author>
    <author>
      <firstName>Břetislav</firstName>
      <lastName>Šmíd</lastName>
    </author>
    <author>
      <firstName>Massimo</firstName>
      <lastName>Tallarida</lastName>
    </author>
    <author>
      <firstName>Steve</firstName>
      <lastName>Albrecht</lastName>
    </author>
    <author>
      <firstName>Antonio</firstName>
      <lastName>Abate</lastName>
    </author>
    <author>
      <firstName>Iva</firstName>
      <lastName>Matolínová</lastName>
    </author>
    <author>
      <firstName>Dieter</firstName>
      <lastName>Schmeißer</lastName>
    </author>
    <author>
      <firstName>Jan Ingo</firstName>
      <lastName>Flege</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>field emission scanning electron microscopy  (FESEM)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Frenkel defects</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>perovskite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>photon-induced degradation</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>
</export-example>
