An inorganic hole conductor for organo-lead halide perovskite solar cells. Improved hole conductivity with copper iodide

Journal of the American Chemical Society
Jeffrey A ChristiansPrashant V Kamat

Abstract

Organo-lead halide perovskite solar cells have emerged as one of the most promising candidates for the next generation of solar cells. To date, these perovskite thin film solar cells have exclusively employed organic hole conducting polymers which are often expensive and have low hole mobility. In a quest to explore new inorganic hole conducting materials for these perovskite-based thin film photovoltaics, we have identified copper iodide as a possible alternative. Using copper iodide, we have succeeded in achieving a promising power conversion efficiency of 6.0% with excellent photocurrent stability. The open-circuit voltage, compared to the best spiro-OMeTAD devices, remains low and is attributed to higher recombination in CuI devices as determined by impedance spectroscopy. However, impedance spectroscopy revealed that CuI exhibits 2 orders of magnitude higher electrical conductivity than spiro-OMeTAD which allows for significantly higher fill factors. Reducing the recombination in these devices could render CuI as a cost-effective competitor to spiro-OMeTAD in perovskite solar cells.

References

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Mar 21, 2013·The Journal of Physical Chemistry Letters·Prashant V Kamat

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Citations

Dec 10, 2015·ACS Applied Materials & Interfaces·Da Seul LeeJong Hyeok Park
Dec 3, 2015·Journal of the American Chemical Society·Kasparas RakstysMohammad Khaja Nazeeruddin
Jan 5, 2016·The Journal of Physical Chemistry Letters·Sudipta SethAnunay Samanta
Feb 18, 2016·The Journal of Physical Chemistry Letters·Abd Rashid Bin Mohd Yusoff, Mohammad Khaja Nazeeruddin
Jan 2, 2016·The Journal of Physical Chemistry Letters·Giacomo MaculanOsman M Bakr
Sep 29, 2015·Journal of the American Chemical Society·Monojit BagD Venkataraman
Sep 25, 2015·ACS Applied Materials & Interfaces·Bahram Abdollahi NejandHamid Reza Shahverdi
Sep 10, 2015·ACS Applied Materials & Interfaces·Zhi YangJinyou Shao
Jul 18, 2015·ACS Applied Materials & Interfaces·Mei LvSongyuan Dai
Jun 11, 2016·The Journal of Physical Chemistry Letters·Sharada GD D Sarma
Oct 21, 2015·ACS Applied Materials & Interfaces·Jiang LiuWoonming Lau
Sep 18, 2016·Nanoscale Research Letters·Lung-Chieh ChenChun-Guey Wu
Dec 29, 2016·ACS Applied Materials & Interfaces·Xuewen YinHong Lin
Jan 14, 2017·The Journal of Physical Chemistry Letters·Wei ChenZhubing He
Mar 24, 2017·ACS Applied Materials & Interfaces·Jin-Miao WangLiang-Sheng Liao
Apr 24, 2014·Scientific Reports·Kuo-Chin WangTen-Chin Wen
Mar 25, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Wenjin ZengYong Min
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Jun 10, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Hai-Qiang LuoJian-Hua Lin
Jun 3, 2016·ChemSusChem·Katarzyna PydzińskaMarcin Ziółek

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