Journal
ACS ENERGY LETTERS
Volume 2, Issue 8, Pages 1760-1761Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.7b00582
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Funding
- Japan Science and Technology Agency-Advanced Low Carbon Technology R&D program (ALCA)
- New Energy and Industrial Technology Development Organization (NEDO)
- Japanese Society for Promotion of Science (JSPS)
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The hole transport material, spiro-OMeTAD, in MAPbI(3) perovskite solar cells undergoes severe morphological deformation at high temperature, showing big voids in the layer when the devices are heated at 80 degrees C and above. It is puzzling that the voids emerge only in the area where the spiro-OMeTAD is capped with Au film and only in the case where the HTM contains both LiTFSI and TBP as additives.
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