Improving device performance of MAPbI 3 photovoltaic cells by manipulating the crystal orientation of tetragonal perovskites.
Anjali ChandelQi Bin KeShou-En ChiangSheng Hsiung ChangPublished in: Nanotechnology (2022)
The properties of CH 3 NH 3 PbI 3 (MAPbI 3 ) crystalline thin films and the device performance of highly efficient MAPbI 3 photovoltaic cells are investigated by varying the temperature of the antisolvent from 20 °C to 50 °C during the washing enhanced nucleation (WEN) process. The surface, structural, optoelectronic and defect properties of the perovskite thin films are characterized through atomic-force microscopy, X-ray diffractometry and photoluminescence spectrometry. The experimental results show that changing the temperature of the antisolvent during the WEN process can manipulate the MAPbI 3 crystalline thin films from the (110)-(002) complex phase to a (002) preferred phase. It is noted that the highest power conversion efficient of the inverted MAPbI 3 photovoltaic cells is 19.30%, mainly due to the increased carrier collection efficiency and reduced carrier recombination when the temperature of the antisolvent is 30 °C.
Keyphrases
- induced apoptosis
- atomic force microscopy
- cell cycle arrest
- highly efficient
- room temperature
- perovskite solar cells
- solar cells
- endoplasmic reticulum stress
- high resolution
- signaling pathway
- dna damage
- quantum dots
- cell death
- computed tomography
- magnetic resonance imaging
- cell proliferation
- single molecule
- ionic liquid
- pi k akt
- solid phase extraction
- tandem mass spectrometry
- walled carbon nanotubes