Perovskite photovoltaic cell for passivating adjacent interfaces of photosensitive layers by MoS2 nanosheet and preparation method of perovskite photovoltaic cell
A photovoltaic cell and perovskite technology, applied in photovoltaic power generation, nanotechnology, nanotechnology, etc., can solve problems such as the impact of the environment and its carrying capacity, and achieve effective matching, increase migration channels, and reduce accumulation.
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[0060] (2)MoS 2 Preparation of nanomaterials:
[0061] (a) Ball milling: the weighed MoS 2 Put the solid powder into the mortar of the ball mill, add 100ml of isopropanol solution, adjust the rotation speed to 580rad / min, and start grinding for one week.
[0062] (b) Centrifugation: After grinding, the pellets were cleaned with isopropanol solution, and the MoS 2 The solutions were mixed, placed in a centrifuge and centrifuged twice. After the first centrifugation (8000rad / min), the supernatant in the centrifuge tube was taken out, and then the second centrifugation (11000rad / min) was carried out to get the lower layer in the centrifuge tube. precipitation.
[0063] (c) Drying: Put the final precipitate in a 60°C drying oven for 12 hours to obtain MoS 2 Nanosheets.
Embodiment 1
[0065] Such as figure 1 As shown, a planar structure perovskite photovoltaic cell includes a transparent conductive substrate, an electron transport layer, a perovskite photosensitive active layer, an interface passivation layer, a hole transport layer and a metal electrode, and its preparation method includes the following steps:
[0066] (1) Treatment of transparent conductive substrate: cleaning FTO (fluorine-doped SnO 2 ) conductive glass sheet, first soak the conductive glass sheet in a solution containing a cleaning agent (such as Libai brand liquid detergent) for 30 minutes, then repeatedly scrub and rinse with clean water; then polish with polishing powder; then respectively Put it into a vessel containing deionized water, acetone and alcohol and sonicate it for 20 minutes; finally put it in deionized water and rinse it twice, blow dry with a nitrogen gun and put it in an oven at 80°C for drying;
[0067] (2)SnO 2 Preparation of QD thin films: SnO on FTO substrates ...
Embodiment 2
[0078] Such as figure 1 As shown, a planar structure perovskite photovoltaic cell includes a transparent conductive substrate, an electron transport layer, a perovskite photosensitive active layer, an interface passivation layer, a hole transport layer and a metal electrode, and its preparation method includes the following steps:
[0079] (1) cleaning ITO conductive glass sheet: with embodiment 1;
[0080] (2)SnO 2 Thin film preparation: SnO was prepared on ITO substrate by spin coating method (2500rad / min) 2 film, and put it into a UV-ozone cleaner, and treat it with UV-ozone for 15 minutes in an atmospheric atmosphere and at room temperature, and the treated SnO 2 / ITO substrate is quickly transferred into the glove box;
[0081] (3) Preparation of perovskite photosensitive active layer: same as Example 1;
[0082] (4) Prepare an interface passivation layer on the perovskite photosensitive film:
[0083] a. Solution preparation: MoS prepared by ball milling in advance ...
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