New collaborative re太阳城娱乐城 may create more accessible, efficient solar energy applications

你知道太阳能吗 预计会考虑 for more than half of the new electricity generating capacity in 2023? As technologies advance and in-depth re太阳城娱乐城 is executed, solar energy is becoming more accessible across applications.

In 创新的新研究杰出教授 劲松黄 在 department of applied physical sciences is making strides to improve the efficiency of solar energy.

Perovskite solar cells have recently become one of the most promising avenues 在 future of solar energy. These unique cells have a structure called p-i-n, which converts sunlight into usable electricity by generating an electric current. 然而, the materials that are used to interface with the bottom layer of solar cells can reduce the efficiency, 稳定, and overall performance of the solar cell.

劲松黄 (standing); first author, Chengbin Fei (seated)

发表在 科学, the re太阳城娱乐城 by Huang and his team works to remedy this issue. 作为解决方案, the team added molecules called lead chelation molecules (LCMs) into the hole transport layer (HTL) which strongly interact with lead in perovskites. 据黄说, this interaction improved the performance of the solar cells by boosting 稳定 while reducing defects. Interestingly, he adds that lead chelation molecules are also used for medication to 治疗血液毒性, demonstrating broad benefit across scientific disciplines.

The team then worked to stabilize the interface between the HTL and perovskite layers. Establishing better connections in this interface means that the cellular layers are less likely to have weak points or defects so that the solar cell can function with more 稳定. 重要的是, this enhancement allows the solar cell to work more efficiently, converting more sunlight into usable electricity.

具体地说, the team fabricated perovskite “minimodules” to examine the uniformity of the modification to the HTL. 孔径面积为26的微型模块.9 square centimeters have a power conversion efficiency of 21.8%（稳定在21%）.1%)由NREL认证. This corresponds to a minimal small cell efficiency of 24.6%（稳定在24%）.1%) throughout the module area, demonstrating very good uniformity. 重要的是, 设备湿热测试通过。处理步骤, demonstrating its ability to withstand high temperatures and humidity. Small-area cells and large area minimodules with LCMs 在 HTL had a light-soaking 稳定 of 3010 and 2130 hours, 分别, at an efficiency loss of 10% from initial value under 1-Sun illumination at open-circuit voltage condition.

Huang’s re太阳城娱乐城 may have an important impact on sustainable and renewable energy applications as scientists continuously seek to better address our world’s energy needs. By better understanding how to make perovskite solar modules more efficient, 稳定的, 和成本效益, scientists may be able to harness solar energy for implementation on a broader scale.