Compact continuous BiOI film for solid-state solar cell via faster lifting speed of the dip-SILAR technique at room temperature

All-solution-processed environment-friendly solid-state BiOI photovoltaic cell with high-short-circuit current by successive ionic layer adsorption and reaction (SILAR)

“…The absorbance of BiOI film (Fig. 6A) is almost the same as reported previously from our group, [10,36] and the optical band gap is calculated to be around 1.8 eV from the Tauc plot (see the inset of Fig. 6A).…”

“…Figure 2A shows the morphology of ten cycle's prepared BiOI and from SEM image, it looks the nano-size flakes are very compactly connected. The mechanism of compact absorber layer formation can be found in our previously reported article [36]. However, some pin-hole still visible at certain areas (see Fig.…”

“…Which is hinting that at 40 cycle's condition, the photovoltaic properties might be affected badly. All the previously reported also indicating that beyond 30 cycles, it is very much hard to get uniform morphology and surface, but in the case of photovoltaic cell absorber layer uniformity is very important [10,36]. Therefore, at 30 dip-SILAR cycle condition (thickness 410 nm), we can expect maximum solar cell performance.…”

“…Very recently, we reported the solution-processed stable BiOI solar cell with TiO 2 electron transport layer (ETL) using SILAR process for different lifting speed. However, the power conversion efficiency was as low as 0.39% [36] because there was no hole transport layer (HTL). This article represents the photovoltaic properties of SILAR prepared BiOI photovoltaic solar cell with both ETL and HTL for the first time.…”

An Experimental and Simulation Study of Cu6BiAgI10 Photovoltaics with Various Organic and Inorganic Hole Transport Layers for the Improved Photovoltaic Performance of Solar Cells

“…The XRD analysis is crucial for the development of new solar cell materials to determine their structural properties such as the size of the crystal and shape, as well as orientation and imperfections, which could impact the efficiency of solar cells. − …”