Bangladesh

The novel solar cell uses antimony trisulfide (Sb2S3) as the back surface field (BSF) layer. According to its creators, this layer can be included in conventional CIGS solar cells to improve their efficiency and reduce the absorber material’s cost.

In December alone, the Bangladeshi authorities approved 630 MW of PV projects.

Tin selenide solar cells have so far reached limited efficiencies in real applications. Bangladeshi scientists claim to have found a way to drastically improve their performance by adding a copper/indium/selenium (CIS) thin-film layer and a back surface field (BSF) layer.

Bangladesh has approved more than 1.5 GW of solar projects over the past seven months, with recent developments including tariffs for 200 MW in November and 310 MW in October.

Researchers in Bangladesh have simulated a solar cell based on a copper bismuth oxide material, used as an absorber, with a hole transport layer made of copper(I) oxide (Cu2O). In the experiment, the device achieved a power conversion efficiency of 29.2%, an open-circuit voltage of 1.02 V, a short-circuit current density of 32.49 mA/cm2, and a fill factor of 87.91%.

Bangladeshi scientists have developed a high-efficiency perovskite solar cell with 26.96% efficiency, an open-circuit voltage of 1.0478 V, and a fill factor of 81.35%.

Scientists in Bangladesh designed a cadmium telluride solar cell with upper/top and back contact materials made of aluminum (Al) and nickel (Ni). The device reportedly showed a quantum efficiency of around 100 % at visible wavelengths.

Bangladesh has implemented a new rule stating that new buildings with rooftop spaces exceeding 92.2 square meters must install net-metered solar power systems as a prerequisite for grid connection.

Bangladesh has approved tariffs of $0.10/kWh for 370 MW of solar at three sites, ranging in size from 70 MW to 200 MW, as the government seeks to expand its generating capacity. The country also has a 1.2 GW pipeline of solar projects under construction.

A research team in Bangladesh has simulated a perovskite-CIGS PV device that can reportedly achieve a remarkable tandem cell voltage of 2.48 V. The proposed method is also applicable for tandem cells composed of other materials.