PEROVSKITE SOLAR CELL AND METHOD FOR PREPARING THE SAME
A perovskite solar cell includes a transparent conductive glass substrate, an electron transport layer, a perovskite light-absorbing layer, a hole transport layer, an electrode, and a metal fluoride layer disposed between the electron transport layer and the perovskite light-absorbing layer. A thickness of the metal fluoride layer is greater than 0 and less than or equal to 3 nm.
1 . A perovskite solar cell, comprising:
a transparent conductive glass substrate;
an electron transport layer;
a perovskite light-absorbing layer;
a hole transport layer;
an electrode; and
a metal fluoride layer disposed between the electron transport layer and the perovskite light-absorbing layer, wherein a thickness of the metal fluoride layer is greater than 0 and less than or equal to 3 nm.
2 . The perovskite solar cell according to claim 1 , wherein the thickness of the metal fluoride layer is 1 nm-3 nm.
3 . The perovskite solar cell according to claim 1 , wherein the transparent conductive glass substrate, the electron transport layer, the metal fluoride layer, the perovskite light-absorbing layer, the hole transport layer, and the electrode are sequentially arranged from bottom to top.
4 . The perovskite solar cell according to claim 1 , wherein the transparent conductive glass substrate, the hole transport layer, the perovskite light-absorbing layer, the metal fluoride layer, the electron transport layer, and the electrode are sequentially arranged from bottom to top.
5 . The perovskite solar cell according to claim 1 , wherein the metal fluoride layer is one or more selected from an alkali metal fluoride and an alkaline earth metal fluoride.
6 . The perovskite solar cell according to claim 1 , wherein the metal fluoride layer is one or more selected from lithium fluoride, sodium fluoride, potassium fluoride, rubidium fluoride, cesium fluoride, magnesium fluoride, calcium fluoride, strontium fluoride, and barium fluoride.
7 . A method for preparing a perovskite solar cell, comprising:
providing a transparent conductive glass substrate;
preparing an electron transport layer on the transparent conductive glass substrate;
depositing a metal fluoride layer on the electron transport layer by evaporation;
preparing a perovskite light-absorbing layer on the metal fluoride layer;
preparing a hole transport layer on the perovskite light-absorbing layer; and
preparing an electrode on the hole transport layer;
wherein a thickness of the metal fluoride layer is greater than 0 and less than or equal to 3 nm.
8 . The method according to claim 7 , wherein the thickness of the metal fluoride layer is 1 nm-3 nm.
9 . The method according to claim 7 , wherein an evaporation rate when depositing the metal fluoride layer is 0.01-0.05 Å/s.
10 . A method for preparing a perovskite solar cell, comprising:
providing a transparent conductive glass substrate;
preparing a hole transport layer on the transparent conductive glass substrate;
preparing a perovskite light-absorbing layer on the hole transport layer;
depositing a metal fluoride layer on the perovskite light-absorbing layer by evaporation;
preparing an electron transport layer on the metal fluoride layer; and
preparing an electrode on the electron transport layer to obtain a perovskite solar cell;
wherein a thickness of the metal fluoride layer is greater than 0 and less than or equal to 3 nm.
11 . The method according to claim 10 , wherein the thickness of the metal fluoride layer is 1 nm-3 nm.
12 . The method according to claim 10 , wherein an evaporation rate when depositing the metal fluoride layer is 0.01-0.05 Å/s.