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一种基于硫化物/多硫化物的离子液体电解质,用于量子点敏化太阳能电池.

Vasko Jovanovski¹, Victoria González-Pedro, Sixto Giménez

¹CIDETEC-IK4, Paseo Miramón 196, 20009 Donostia/San Sebastian, Spain.

Journal of the American Chemical Society

|November 24, 2011

概括

研究人员开发了一种稳定的S(2-) /S(n) 2-) 电解质,用于量子点敏感太阳能电池 (QDSC). 这一进步提高了设备的寿命和光电极的稳定性,这对于未来的QDSC开发至关重要.

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科学领域:

材料科学材料科学材料科学
可再生能源可再生能源是可再生能源.
电化学电化学电化学

背景情况:

量子点敏感太阳能电池 (QDSC) 需要提高长期稳定性,同时提高光伏 (PV) 转换效率.
目前的QDSC技术面临着与电解质稳定性和设备寿命相关的挑战.

研究的目的:

开发一种强大的S(2-) /S(n) 2-) 电解质,与化 (CdSe) 量子点兼容,用于敏感太阳能电池.
提高QDSC的效率和长期稳定性.

主要方法:

设计和合成一种新型的pyrrolidinium离子液体电解质.
使用CdSe量子点和开发的电解质制造QDSC.
在标准照明下 (AM 1.5G) 的性能表征和超过240小时的稳定性测试.

主要成果:

新的电解质实现了1.86%的功率转换效率 (PCE).
记录了一个高短路电流 (Jsc) 约为14mA·cm(-2).
该设备的寿命有所改善,光电极稳定性良好,超过240小时.

结论:

开发的S(2-) /S(n) 2-) 电解质为增强QDSC稳定性和性能提供了强大的解决方案.
确定的局限性包括相反电极催化能力差以及高的重组率.
在强大的电解质框架内进一步优化这些因素对于推进QDSC技术具有重大潜力.