Black porphyrin doped-Free hole transport materials for perovskite solar cells
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    Abstract:

    The dopant-free hole-transporting materials are a key issue to realize the practical application of perovskite solar cells (PSCs). In this work, a black porphyrin molecule with high thermal stability and complete visible light absorption, 5,10,15,20-tetra[3,5-di(tert-butyl)phenyl]- β,β'-tetranaphthoquinone[6,7-g] zinc porphyrin (T1), was synthesized successfully and the studies of its photo physics, electrochemical properties and film-forming properties were carried out. Moreover, the highest occupied molecular orbital(HOMO) energy level of T1 is similar to that of spiro-OMeTAD, which can be well matched with the perovskite material MAPbI3. The power conversion efficiency (PCE) of the device based on T1 without any dopant can reach 13.43%, which was much higher than that of spiro-OMeTAD-based devices (11.63%) prepared under the same conditions.

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History
  • Received:January 05,2021
  • Revised:February 22,2021
  • Adopted:February 23,2021
  • Online: April 07,2021
  • Published:
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