| abstract |
The invention belongs to the field of photovoltaics, and discloses an all-inorganic perovskite solar cell and a preparation method thereof, that is, a trans-mesoscopic structure all-inorganic perovskite solar cell. The solar cell sequentially comprises a conductive glass layer from bottom to top, dense holes Transport layer, mesoporous hole transport layer, inorganic perovskite light absorption layer, electron transport layer, hole blocking layer and counter electrode layer. The positions of the electron transport layer and the hole transport layer in the traditional mesostructured perovskite cell are exchanged, and a layer of all-inorganic perovskite light-absorbing material is prepared between the double-layer inorganic hole material and the electron transport material to obtain a Inverted mesostructure device with double-layer hole transport layer. The present invention applies the mesoporous double-layer hole structure in all-inorganic perovskite solar cells for the first time, which not only effectively solves the stability problem related to volatile cations in perovskite, but also solves the problem of planar heterojunction perovskite solar cells. The problems of poor carrier transport efficiency and relatively low photoelectric conversion performance in batteries. |