| 查看: 1236 | 回复: 3 | ||||
[求助]
钙钛矿合成
|
|
看了一篇文献Semiconducting Tin and Lead Iodide Perovskites with Organic Cations：Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties，里面提到合成CH3NH3PbI3钙钛矿的反应是在水溶液里进行的，无比好奇这个到底是怎么合成出来的，钙钛矿不是见水就分解吗？ 自己试了两次，也都是呈现PbI2的的黄色溶液，没有析出钙钛矿。 这个文献引用率很高，一年160多次，工艺应该不会有假的，但是为什么重复不出来呢？  不知道有没有虫子看过这个？欢迎大家讨论一下~~~ 附合成工艺： 1. A 100 ml 2-necked round bottom flask was charged with a mixture of aqueous HI (6.8 ml, 7.58M) and aqueous H3PO2 (1.7 ml, 9.14M). The liquid was degassed by passing a stream of nitrogen through it for 1 min and keeping it under a nitrogen atmosphere throughout the experiment. 2. PbI2 (462 mg, 1 mmol) was dissolved in the mixture upon heating the flask to 120oC using an oil bath, under constant magnetic stirring, forming a bright yellow solution. 3. To the hot yellow solution was added solid CH3NH3I (159 mg, 1 mmol) dissolving immediately. 4. The solution was evaporated to approximately half its original volume by heating at 120oC. The stirring was discontinued and the solution was left to cool back to room temperature. 5. Upon cooling, black, rhombic dodecahedral crystals (12 faces) of the title compound precipitated. 6. The crystals were left to grow inside the mother liquor for a further 24 h under a nitrogen atmosphere before being filtered and washed copiously with anhydrous EtOH. Yield 70-90%. |
回复此楼» 收录本帖的淘帖专辑推荐
 考博复试 | solar cells |
» 猜你喜欢
请问对标matlab的开源软件octave的网站https://octave.org为什么打不开？
已经有1人回复
-
求助两种BiOBr晶体的CIF文件（卡片号为JCPDS 09-0393与JCPDS 01-1004 ）
已经有0人回复
-
无机化学论文润色/翻译怎么收费?
已经有267人回复
-
哈尔滨工程大学材化学院国家级青年人才-26年硕士招生
已经有0人回复
-
求助Fe-TCPP、Zn-TCPP的CIF文件，或者CCDC号
已经有0人回复
-
河北大学-26年秋季入学申请考核制-化学博士1名
已经有0人回复
-
XPS/?λXPS
已经有0人回复
套大侠070212
至尊木虫 (知名作家)
上尉
- 应助: 4 (幼儿园)
- 金币: 11585.3
- 散金: 166
- 红花: 18
- 沙发: 78
- 帖子: 7588
- 在线: 482小时
- 虫号: 1013886
- 注册: 2010-05-08
- 专业: 绿色有机化学
2楼2014-12-24 17:45:32
3楼2015-01-14 13:25:07
4楼2015-01-14 14:49:30