講演情報
[21p-C601-22]Annealing temperature dependent structural, optical, and photovoltaic properties of Cu6AgBiI10 solar cells
〇(D)MD ARIFUL ISLAM1,2, Keigo Aida1, Shinya Kato1, Tetsuo Soga1 (1.Nagoya Institute of Technology, 2.University of Barisal)
キーワード：
Non-Toxic materials、perovskite solar cells、Cu-Ag-Bi-I
Studies on Cu6AgBiI10 (CABI), a cheap and non-toxic material, have focused on its potential for environmental harmony. The inorganic Cu, Ag, Bi, and I base compounds were recently shown to significant promise for optoelectronic and solar applications due to their outstanding stability, acceptable band gaps, high absorption coefficients, and charged carrier transport capabilities.
The aim of this work was to produce the highest quality absorber layer. The method used was a single-step spin coating using hot casting droplets poured onto pre-heated substrates. To anneal films, two-step annealing was used. In the first step, the films were annealed in the glove box at 75°C for 3 minutes before being annealed at 150°C for 6 minutes as the second step on the hot plate. Five different samples were prepared using the annealing temperature ranging from 130 °C to 170 °C. The films were characterized by XRD, SEM, UV and I-V to determine phase analysis, surface morphology, optical properties, as well as their photovoltaic properties. The XRD analysis shows that crystallinity is increasing with increased annealing temperature. SEM also shows an improvement in film surface morphology with increasing annealing temperatures. Initial film showed split islands type grains. However, this pattern changes as the annealing process increases. At 150°C, our optical inspection revealed high absorbance but low reflectivity in CABI film.The active layer is thicker, which helps to absorb more light. As a result, the Jsc increased. Finally, we were able achieve a maximum power conversion efficiency (0.041%) through analysis of photovoltaic characteristics. The above research shows that annealing is a key factor in the formation of CABI absorber layers.
The aim of this work was to produce the highest quality absorber layer. The method used was a single-step spin coating using hot casting droplets poured onto pre-heated substrates. To anneal films, two-step annealing was used. In the first step, the films were annealed in the glove box at 75°C for 3 minutes before being annealed at 150°C for 6 minutes as the second step on the hot plate. Five different samples were prepared using the annealing temperature ranging from 130 °C to 170 °C. The films were characterized by XRD, SEM, UV and I-V to determine phase analysis, surface morphology, optical properties, as well as their photovoltaic properties. The XRD analysis shows that crystallinity is increasing with increased annealing temperature. SEM also shows an improvement in film surface morphology with increasing annealing temperatures. Initial film showed split islands type grains. However, this pattern changes as the annealing process increases. At 150°C, our optical inspection revealed high absorbance but low reflectivity in CABI film.The active layer is thicker, which helps to absorb more light. As a result, the Jsc increased. Finally, we were able achieve a maximum power conversion efficiency (0.041%) through analysis of photovoltaic characteristics. The above research shows that annealing is a key factor in the formation of CABI absorber layers.