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郑州大学郭玮Angew:锂基深共熔修饰 Spiro-OMeTAD 实现高效稳定钙钛矿太阳能电池

  • 2026-04-19 11:16:11
郑州大学郭玮Angew:锂基深共熔修饰 Spiro-OMeTAD 实现高效稳定钙钛矿太阳能电池
在 n-i-p 型钙钛矿太阳能电池中,Spiro-OMeTAD 掺杂双三氟甲磺酰亚胺锂(LiTFSI)与 4 - 叔丁基吡啶(tBP)是实现高效率的关键,但Li⁺迁移与 LiTFSI 的吸湿性会严重降低器件长期稳定性。

本文郑州大学郭玮等人选用2,2'- 二吡啶二硫醚(DpyDS)与 Li⁺强相互作用,室温下与 LiTFSI 形成液态深共熔体系。该分子膜兼具抑制 Li⁺扩散修复空穴传输层孔洞双重功能,同时促进 TFSI⁻解离、提升 Spiro-OMeTAD 空穴迁移率,强化空穴抽取并降低非辐射复合损失。

基于该策略的器件实现26.53% 光电转换效率(第三方认证 26.37%);未封装器件在 ISOS-L-1I 标准下连续 1800 小时最大功率点追踪后,仍保持 90.5%初始效率。

研究亮点:
              • 深共熔新策略破解锂迁移难题
                首次将 DpyDS-LiTFSI 深共熔引入 HTL,多位点强配位牢牢锚定 Li⁺,彻底解决传统掺杂中锂漂移、吸潮、成膜孔洞三大痛点。
              • 效率与认证双高
                实现 26.53% 超高效率,第三方权威认证26.37%, hysteresis 极低,器件一致性优异。
              • 稳定性行业顶尖
                未封装器件 1800 小时光照仅衰减 9.5%,3100 小时湿度存储保持 93% 效率,为传统 HTL 改性最优水平之一。

              H.Zhang, Y.Sun, and J.Guo et al., Angewandte Chemie International Edition ((2026): e9551164, https://doi.org/10.1002/anie.9551164.

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              139. /yingpanguazai/ssd/ssd1/www/i.460.net.cn/runtime/temp/ea612fc1da910b74827694dd9af81119.php ( 11.98 KB )
              140. /yingpanguazai/ssd/ssd1/www/i.460.net.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
              1. CONNECT:[ UseTime:0.000941s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
              2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001508s ]
              3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000672s ]
              4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000696s ]
              5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001313s ]
              6. SELECT * FROM `set` [ RunTime:0.000591s ]
              7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001495s ]
              8. SELECT * FROM `article` WHERE `id` = 518305 LIMIT 1 [ RunTime:0.005407s ]
              9. UPDATE `article` SET `lasttime` = 1777104098 WHERE `id` = 518305 [ RunTime:0.013802s ]
              10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.016023s ]
              11. SELECT * FROM `article` WHERE `id` < 518305 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.012010s ]
              12. SELECT * FROM `article` WHERE `id` > 518305 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.007582s ]
              13. SELECT * FROM `article` WHERE `id` < 518305 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001780s ]
              14. SELECT * FROM `article` WHERE `id` < 518305 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005618s ]
              15. SELECT * FROM `article` WHERE `id` < 518305 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.008797s ]
              0.256743s