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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.11854">arXiv:1908.11854</a> <span> [<a href="https://arxiv.org/pdf/1908.11854">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Soft Condensed Matter">cond-mat.soft</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> </div> <p class="title is-5 mathjax"> The influence of impurities on the charge carrier mobility of small molecule organic semiconductors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Friederich%2C+P">Pascal Friederich</a>, <a href="/search/physics?searchtype=author&query=Fediai%2C+A">Artem Fediai</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J">Jing Li</a>, <a href="/search/physics?searchtype=author&query=Mondal%2C+A">Anirban Mondal</a>, <a href="/search/physics?searchtype=author&query=Kotadiya%2C+N+B">Naresh B. Kotadiya</a>, <a href="/search/physics?searchtype=author&query=Symalla%2C+F">Franz Symalla</a>, <a href="/search/physics?searchtype=author&query=Wetzelaer%2C+G+A+H">Gert-Jan A. H. Wetzelaer</a>, <a href="/search/physics?searchtype=author&query=Andrienko%2C+D">Denis Andrienko</a>, <a href="/search/physics?searchtype=author&query=Blase%2C+X">Xavier Blase</a>, <a href="/search/physics?searchtype=author&query=Beljonne%2C+D">David Beljonne</a>, <a href="/search/physics?searchtype=author&query=Blom%2C+P+W+M">Paul W. M. Blom</a>, <a href="/search/physics?searchtype=author&query=Br%C3%A9das%2C+J">Jean-Luc Br茅das</a>, <a href="/search/physics?searchtype=author&query=Wenzel%2C+W">Wolfgang Wenzel</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1908.11854v2-abstract-short" style="display: inline;"> Amorphous organic semiconductors based on small molecules and polymers are used in many applications, most prominently organic light emitting diodes (OLEDs) and organic solar cells. Impurities and charge traps are omnipresent in most currently available organic semiconductors and limit charge transport and thus device efficiency. The microscopic cause as well as the chemical nature of these traps… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.11854v2-abstract-full').style.display = 'inline'; document.getElementById('1908.11854v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.11854v2-abstract-full" style="display: none;"> Amorphous organic semiconductors based on small molecules and polymers are used in many applications, most prominently organic light emitting diodes (OLEDs) and organic solar cells. Impurities and charge traps are omnipresent in most currently available organic semiconductors and limit charge transport and thus device efficiency. The microscopic cause as well as the chemical nature of these traps are presently not well understood. Using a multiscale model we characterize the influence of impurities on the density of states and charge transport in small-molecule amorphous organic semiconductors. We use the model to quantitatively describe the influence of water molecules and water-oxygen complexes on the electron and hole mobilities. These species are seen to impact the shape of the density of states and to act as explicit charge traps within the energy gap. Our results show that trap states introduced by molecular oxygen can be deep enough to limit the electron mobility in widely used materials. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.11854v2-abstract-full').style.display = 'none'; document.getElementById('1908.11854v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages + SI, 7 figures + TOC-graphic + 2 figures in SI</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: 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