High efficiency solution processed sintered CdTe nanocrystal solar cells: the role of interfaces

Nano Letters
Matthew G PanthaniDmitri V Talapin

Abstract

Solution processing of photovoltaic semiconducting layers offers the potential for drastic cost reduction through improved materials utilization and high device throughput. One compelling solution-based processing strategy utilizes semiconductor layers produced by sintering nanocrystals into large-grain semiconductors at relatively low temperatures. Using n-ZnO/p-CdTe as a model system, we fabricate sintered CdTe nanocrystal solar cells processed at 350 °C with power conversion efficiencies (PCE) as high as 12.3%. JSC of over 25 mA cm(-2) are achieved, which are comparable or higher than those achieved using traditional, close-space sublimated CdTe. We find that the VOC can be substantially increased by applying forward bias for short periods of time. Capacitance measurements as well as intensity- and temperature-dependent analysis indicate that the increased VOC is likely due to relaxation of an energetic barrier at the ITO/CdTe interface.

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Citations

Jun 10, 2014·Nanoscale Research Letters·Vincent ConsonniAnne Kaminski-Cachopo
Apr 3, 2014·Journal of the American Chemical Society·Joel van EmbdenJacek J Jasieniak
Jan 23, 2016·Nature Materials·Michael A BolesDmitri V Talapin
Aug 12, 2014·ACS Applied Materials & Interfaces·Jing-Jing WangXi-Wen Du
Nov 17, 2015·The Journal of Physical Chemistry Letters·Ryan CrispNikos Kopidakis
Mar 5, 2016·ACS Applied Materials & Interfaces·Gan JinBai Yang
Mar 5, 2016·ACS Applied Materials & Interfaces·Brandon W LaveryThad Druffel
Jun 9, 2016·Journal of the American Chemical Society·Hao ZhangDmitri V Talapin
Jun 22, 2016·Nature Communications·Yingjie ZhangA Paul Alivisatos
May 5, 2017·Chemistry : a European Journal·Dimuthu C SenevirathnaPhilip C Andrews
Apr 24, 2014·ACS Applied Materials & Interfaces·Troy K TownsendJoseph G Tischler
Jul 2, 2014·Physical Chemistry Chemical Physics : PCCP·Troy K Townsend, Edward E Foos
Jan 23, 2015·Advanced Materials·Philipp StadlerWolfgang Heiss
Jan 9, 2015·Science·Dmitriy S DolzhnikovDmitri V Talapin
Jul 29, 2017·Science·Yuanyuan WangDmitri V Talapin
May 22, 2019·Annual Review of Physical Chemistry·Benjamin T DirollRichard D Schaller
Aug 10, 2017·Nanomaterials·Rongfang WuLintao Hou
Feb 8, 2018·Chemical Communications : Chem Comm·Yixin DongSong Xue
Mar 31, 2015·Chemistry : a European Journal·Tetsuya KidaKengo Shimanoe
Apr 6, 2021·Chemistry of Materials : a Publication of the American Chemical Society·Irene RosinaLiberato Manna
Jul 3, 2021·Nanomaterials·Kening XiaoDan Wang

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