NDLI: Depleted hole conductor-free lead halide iodide heterojunction solar cells

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Depleted hole conductor-free lead halide iodide heterojunction solar cells

Content Provider	Semantic Scholar
Author	Laban, Waleed Abu
Copyright Year	2015
Abstract	Finding solutions for alternative energy is currently a leading research area and will remain so for the foreseeable future, when photovoltaic (PV) is one of the key technologies towards a sustainable energy supply. Recent discoveries revealed a breakthrough in the eld using inorganic–organic hybrid layers named perovskites. The organic–inorganic arrangement is self-assembled as alternate layers, being a simple low cost procedure. These organic–inorganic hybrids promise a few benets that cannot be encountered by the separate constituents. Latest reports showed high efficiencies for the perovskite based solar cells when using various hole transport materials (HTM). However, the HTM can cause oxidation and inltration problems into the porous metal oxide in addition to the increase in the solar cell cost. In this work, we present a high efficiency CH3NH3PbI3 heterojunction solar cell, which can function simultaneously Lead halide perovskite is an excellent candidate for use as a light harvester in solar cells. Our work presents a depleted hole conductor free CH3NH3PbI3/TiO2 heterojunction solar cell using a thick CH3NH3PbI3 film. The CH3NH3PbI3 formed large crystals which function simultaneously as light harvesters and as hole transport materials. We performed capacitance voltage measurements, which show a depletion regionwhich extends to both n and p sides. The built-infield of the depletion region assists in the charge separation and suppresses the back reaction of electrons from the TiO2 film to the CH3NH3PbI3 film. This depleted hole conductor free CH3NH3PbI3/TiO2 heterojunction solar cell provides a power conversion efficiency of 8% with a current density of 18.8 mA cm , the highest efficiency achieved to date for perovskite based solar cells without a hole conductor.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://chem.ch.huji.ac.il/etgar/DepletedHoleConductorFreeLeadHalideIodide14.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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