Microplasma-synthesized ultra-small NiO nanocrystals, a ubiquitous hole transport material.
Microplasma-synthesized ultra-small NiO nanocrystals, a ubiquitous hole transport material.
复制标题
DOI：
10.1039/c9na00299e
复制
发表时间：
2019-12-03
影响因子：
4.7
通讯作者：
中科院分区：
文献类型：
--
作者：
我们报告了一个一步混合大气压等离子体-液体合成超小NiO纳米晶体（2 nm的平均直径），表现出较强的量子限制。我们展示了合成过程的多功能性，并提出了纳米晶体（NC）的上级材料特性。实验获得的NiO NCs的能带图突出了它们作为空穴传输层在广泛的光伏（PV）器件架构中的实现的理想特征。作为概念的证明，我们展示了NiO NCs作为三种不同PV器件测试架构的空穴传输层，其中包含硅量子点（Si-QD），氮掺杂碳量子点（N-CQD）和钙钛矿作为吸收层。我们的结果清楚地显示了理想的能带对准，这可能导致所有三种太阳能电池的金属接触中的载流子提取的改善。此外，在钙钛矿太阳能电池的情况下，NiO NC空穴传输层充当保护层，防止卤化物钙钛矿从环境水分降解，具有稳定的性能>70天。我们的研究结果还显示了非常适合全无机第三代太阳能电池（例如基于量子点）未来发展的独特特性，其中量子限制可以有效地用于调整能带图，以适应不同太阳能电池架构的能级对准要求。我们报告了一步混合大气压等离子体-液体合成的超小NiO纳米晶体（2 nm的平均直径），表现出较强的量子限制和良好的兼容性作为空穴传输层的各种太阳能吸收层。
We report on a one-step hybrid atmospheric pressure plasma-liquid synthesis of ultra-small NiO nanocrystals (2 nm mean diameter), which exhibit strong quantum confinement. We show the versatility of the synthesis process and present the superior material characteristics of the nanocrystals (NCs). The band diagram of the NiO NCs, obtained experimentally, highlights ideal features for their implementation as a hole transport layer in a wide range of photovoltaic (PV) device architectures. As a proof of concept, we demonstrate the NiO NCs as a hole transport layer for three different PV device test architectures, which incorporate silicon quantum dots (Si-QDs), nitrogen-doped carbon quantum dots (N-CQDs) and perovskite as absorber layers. Our results clearly show ideal band alignment which could lead to improved carrier extraction into the metal contacts for all three solar cells. In addition, in the case of perovskite solar cells, the NiO NC hole transport layer acted as a protective layer preventing the degradation of halide perovskites from ambient moisture with a stable performance for >70 days. Our results also show unique characteristics that are highly suitable for future developments in all-inorganic 3rd generation solar cells (e.g. based on quantum dots) where quantum confinement can be used effectively to tune the band diagram to fit the energy level alignment requirements of different solar cell architectures. We report on a one-step hybrid atmospheric pressure plasma-liquid synthesis of ultra-small NiO nanocrystals (2 nm mean diameter), which exhibit strong quantum confinement and excellent compatibility as hole transport layer for various solar absorber layers.
登录
查看更多内容
影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
Snaith, Henry J.
影响因子：
4
作者：
BHATTACHARYYA, D;CHAUDHURI, S;PAL, AK
通讯作者：
PAL, AK
影响因子：
1.9
作者：
Grosvenor, Andrew P.;Biesinger, Mark C.;McIntyre, N. Stewart
通讯作者：
McIntyre, N. Stewart
影响因子：
35
作者：
Heo, Jin Hyuck;Im, Sang Hyuk;Seok, Sang Il
通讯作者：
Seok, Sang Il
影响因子：
19
作者：
Cheng, Jiaqi;Zhang, Hong;Choy, Wallace C. H.
通讯作者：
Choy, Wallace C. H.