研究目的
To question the validity of laser cooling of semiconductors in CdS nanobelts as reported by Xiong and co-workers.
研究成果
The authors express serious doubts about the validity of the claims made by Xiong and co-workers regarding laser cooling of CdS nanobelts, suggesting it is too early to conclude that laser cooling of semiconductors has been achieved.
研究不足
The critique points out the lack of reproducibility by other groups and the inconsistency in cooling timescales with theoretical models. It also questions the feasibility of achieving the required external quantum efficiencies for semiconductor cooling.
