Solid-state-ligand-exchange free quantum dot ink-based solar cells with an efficiency of 10.9%†,Energy & Environmental Science

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Solid-state-ligand-exchange free quantum dot ink-based solar cells with an efficiency of 10.9%†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-04-06 00:00:00 , DOI: 10.1039/c8ee00278a
Havid Aqoma _{1,

2,

3,

4} , Sung-Yeon Jang _{1,

2,

3,

4}

Affiliation

While colloidal quantum dot based solar cells (CQDSCs) have recently achieved power conversion efficiencies (PCE) up to 11.3%, the CQD active layers are fabricated almost exclusively by a combined process of in situ solid-state ligand exchange (SSE) with multiple layer-by-layer (LbL) deposition, which has been a major obstacle to high-throughput processing. In this work, we developed, for the first time, high-efficiency CQDSCs without using either the SSE or LbL technique. The fabrication of n–p quantum dot junctions by SSE-free direct coating was achieved using n-type CQD ink and p-type CQD ink. The ink based devices achieved a PCE of ∼11%, which is comparable to the current state-of-the-art performance. The CQD inks enabled, for the first time, use of the doctor-blade coating method for device fabrication. Notably, the PCE of the bladed CQDSCs was remarkably high, at >10%, which suggests its potential use in other industrially friendly processes.

中文翻译：

固态配体交换自由量子点墨水基太阳能电池，效率为10.9％†

虽然基于胶体量子点的太阳能电池（CQDSC）最近实现了高达11.3％的功率转换效率（PCE），但CQD有源层几乎完全是通过原位结合工艺制造的固态配体交换（SSE）和多层（LbL）沉积，这已成为高通量处理的主要障碍。在这项工作中，我们首次开发了不使用SSE或LbL技术的高效CQDSC。使用n型CQD墨水和p型CQD墨水，可以通过无SSE的直接涂层来制造n–p量子点结。基于墨水的设备实现了约11％的PCE，与当前的最新性能相当。CQD油墨首次启用了刮墨刀涂层法用于设备制造。值得注意的是，刀片式CQDSC的PCE非常高，> 10％，这表明它在其他工业友好工艺中的潜在用途。

更新日期：2018-04-06

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