Coverage up to the infrared region

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  • HAYASE Shuzi
    Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology

Bibliographic Information

Other Title
  • 赤外領域での光電変換を可能に
  • 赤外領域での光電変換を可能に : カクテルペロブスカイト太陽電池
  • セキガイ リョウイキ デ ノ コウデン ヘンカン オ カノウ ニ : カクテルペロブスカイト タイヨウ デンチ
  • cocktail perovskite solar cells
  • カクテルペロブスカイト太陽電池

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Description

<p>Printable Pb perovskite solar cells have attracted interest because of a high power conversion efficiency that can reach 17%. However, the light harvesting region has been limited in the visible region to 800 nm. In order to increase the power conversion efficiency further, device structures harvesting energy from the near infrared area are desired. We have succeeded in harvesting light up to 1000 nm by using Sn/Pb cocktail perovskite materials. HOMO-LUMO energy levels were tunable and the stability in air was improved by changing the Sn/Pb ratio. When this was compared to a Pb perovskite solar cell with 14.3% efficiency, the decrease in shunt resistance was remarkable. In order to increase the efficiency further, a design for the charge separation interface that avoids charge recombination is needed.</p>

Journal

  • Oyo Buturi

    Oyo Buturi 83 (8), 660-664, 2014-08-10

    The Japan Society of Applied Physics

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