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<p>Researchers at the <a href="https://www.gist.ac.kr/en/main.html" target="_blank" rel="noopener">Gwangju Institute of Science and Technology</a>, South Korea, have claimed that they have developed a new method to increase perovskite solar cells&#8217; efficiency by utilizing ions.</p>
<p>The researchers said perovskite solar cells are thin, light, and have a high conversion efficiency of over 25%. However, the efficiency decreases because of the defects in the organic-inorganic complex perovskite materials.</p>
<p>In its report, they explained that defects inside perovskite material have a charge that could be divided into positive electric and negative electric charges. Researchers used a passivation method to control this charge using a material with one charge or unshared electron pair. But only one type of charge can be passivated through this method.</p>
<p>The researchers used L-alanine as an additive to perovskite materials to passivate defects and increase grains in perovskite solar cells to overcome the problem. They confirmed that solar cell efficiency increased to 20.3% from 18.3%.</p>
<p>The report confirmed that the improvement in device efficiency was due to inhibition of nonradiative recombination of perovskite materials through photoluminescence spectroscopy – a contactless and non-destructive method of probing the electronic structure of materials &#8211; and time-related single-photon calculation techniques.</p>
<p>Kwanghee Lee, the lead researcher, said that the research suggested a new principle that can resolve defects inside materials with a zwitterion molecule. &#8220;This is expected to be applicable not only to the solar cell field but also to various semiconductor devices like light-emitting diodes, transistors, optical sensors using mixed organic and inorganic perovskites.&#8221;</p>
<p>In October 2020, a research team from the Australian Research Council Center of Excellence in Exciton Science <a href="https://mercomindia.com/researchers-develop-process-to-control/" target="_blank" rel="noopener">claimed</a> that they had developed a process that can help enhance perovskite cells&#8217; commercial use.</p>
<p>Mercom had earlier <a href="https://mercomindia.com/scientists-introduce-way-to-stabilize-perovskite-cells/" target="_blank" rel="noopener">reported</a> that a research team from the Iowa State University came up with a technique that made perovskite solar cell material more stable at higher temperatures.</p>
<div class="saboxplugin-wrap" itemtype="http://schema.org/Person" itemscope itemprop="author"><div class="saboxplugin-tab"><div class="saboxplugin-gravatar"></div><div class="saboxplugin-authorname"><a href="https://cms.mercomindia.com/author/harsh-shukla/" class="vcard author" rel="author"><span class="fn">Harsh Shukla</span></a></div><div class="saboxplugin-desc"><div itemprop="description"><p><img class="alignleft" src="https://mercomindia.com/wp-content/uploads/2022/02/Harsh-Shukla-293x300-1-new.jpg" width="99" height="102" /><a href="https://mercomindia.com/author/harsh-shukla/" target="_blank" rel="noopener"><strong style="color: #00b451">Harsh Shukla</strong> </a>is a staff reporter at Mercom India. Previously with Indian Express, he has covered general interest stories. He holds a Masters Degree in Journalism from Symbiosis Institute of Media and Communication, Pune.</p>
<p><a href="https://mercomindia.com/author/harsh-shukla/">More articles from Harsh Shukla.</a></p>
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Researchers Develop Method to Enhance Efficiency of Perovskite Solar Cells

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