Abstract
The present work aims to fabricate n-i-p forward perovskite solar cell (PSC) withئ structure (FTO/ compact TiO2/ compact TiO2/ MAPbI3 Perovskite/ hole transport layer/ Au). P3HT, CuI and Spiro-OMeTAD were used as hole transport layers. A nano film of 25 nm gold layer was deposited once between the electron transport layer and the perovskite layer, then between the hole transport layer and the perovskite layer. The performance of the forward-perovskite solar cell was studied. Also, the role of each electron transport layer and the hole transport layer in the perovskite solar cell was presented. The structural, morphological and electrical properties were studied with X-ray diffractometer, field emission scanning electron microscope and current-voltage (J-V) characteristic curves, respectively. J-V curves revealed that the deposition of the Au layer between the electron transport layer (ETL) and Perovskite layer (PSK) reduced the power conversion efficiency (PCE) from 3% to 0.08% when one layer of C. TiO2 is deposited in the PSC and to 0.11% with two layers of C. TiO2. Power conversion efficiency, with CuI as the hole transport layer (HTL), showed an increase from 0.5% to 2.7% when Au layer was deposited between PSK and CuI layers. Also, Isc increased from 6.8 mA to 17.4 mA and Voc from 0.3 V to 0.5V. With depositing Au layer between P3HT and PSK layers, the results showed an increase in the efficiency from 1% to 2.6% and an increase in Isc from 10.7 mA to 30.5 mA, while Voc decreased from 0.75 V to 0.5V
Highlights
The last few years have seen an explosion of interest in photo-voltaic (PV) systems with an organic-inorganic lead halide perovskite active layer, that appeals to the technical community according to their high efficiency and inexpensive cost [1,2,3]
This work is aimed to study the effect of gold nano-film on the performance of PCS when it is placed between perovskite layer and each of the electron and hole transport layers
The structure of the PSK layers were analyzed with a Shimadzu 6000 X-ray diffractometer, using Cu Kα radiation of wavelength 1.5406A°
Summary
The last few years have seen an explosion of interest in photo-voltaic (PV) systems with an organic-inorganic lead halide perovskite active layer, that appeals to the technical community according to their high efficiency and inexpensive cost [1,2,3]. The Perovskite Solar Cell (PSC) is consisted of five layers: hole transport layer (HTL), metal-based cathode, electron transport layer, perovskite as the absorber layer, and transparent conductive oxide (TCO) [8]. The hole transport layer (HTL) collects holes from the absorber layer and transports them to the cathode, where they are blocked by electrons.
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