01【研究背景】

02【文章简介】

近日，重庆大学孙宽、郭冰和国科大杭高院杜鹃、张泽宇等人联合韩国蔚山国家科学技术院、德国CTF Solar和晶澳太阳能等科研机构和光伏制造商，通过使用二元混合空穴传输层，将聚3-己基噻吩（P3HT）引入到常用的Spiro-OMeTAD:Li-TFSI:tBP空穴传输体系以提高空穴传输层表面疏水性，并通过掺杂剂与聚合物的相互作用增强空穴的提取与传输能力，实现超24% PCE的高效稳定钙钛矿太阳能电池。

Fig. 1. (a) Schematic illustration of the planar structure of n-i-p perovskite solar cell and the chemical structure of Spiro-OMeTAD and P3HT. (b) Statistical distribution of PCE values for control PSCs and m-HTL based PSCs (25 devices are made for each condition). (c) J-V curves under reverse scan for the control and m-HTL based devices. (d) PCE evolution of the unencapsulated control and m-HTL based devices (20 devices for each condition) under dark ambient conditions (30% RH).

Fig. 2. AFM height images in 2*2 μm area of HTLs with different ratios of P3HT: (a) Control Spiro-OMeTAD, (b) 1 wt%, (c) 5 wt%, (d) 10 wt% and (e) 20 wt% P3HT/Spiro-OMeTAD m-HTL. (f) Statistical PCE distribution of PSCs devices with various ratios of P3HT in Spiro-OMeTAD (25 devices are made for each condition).

Fig. 3. Moisture resistance and suppressed perovskite degradation via m-HTL. (a) Contact angle images as a function of time for the control HTL and m-HTL using deionized water. XRD patterns of fresh and aged perovskite films based on (b) control HTL and (c) m-HTL. 2D GIWAXS patterns of aged perovskite films based on (d) control HTL and (e) m-HTL.

Fig. 4. Molecular stacking characterization of m-HTL. (a) Normalized absorption spectra of the P3HT film with or without Li-TFSI, respectively. (b) Raman spectra of the P3HT with or without Li-TFSI, respectively. 2D GIWAXS patterns of the (c) dopant-free P3HT and (d) Li-TFSI doped P3HT films.

Fig. 5. (a) Space-charge-limited current (SCLC) results obtained from the structure of ITO/PEDOT:PSS/HTL/Ag. (b) Steady-state and (c) time-resolved PL spectra of neat perovskite film, perovskite/control (Spiro-OMeTAD) and perovskite/m-HTL. (d) Nyquist plots of the PSCs based on control and m-HTL, the inset in 5d represents the equivalent circuit. (e) Normalized time-resolved THz photoconductivity of neat perovskite film, perovskite/control (Spiro-OMeTAD) and perovskite/m-HTL for 500 nm (2.48 eV) pump with fluences of 35.65 μJ/cm2, the inset in 5e represents the schematic illustration of the TRTS for samples. (f) Steady-state photocurrent for control and m-HTL based devices at the maximum power point under AM 1.5G one Sun illumination.

03【通讯作者简介】

孙宽，工学博士，博士生导师。重庆大学能源与动力工程学院副院长，低品位能源利用技术及系统教育部重点实验室副主任，国家级青年科技人才，重庆市研究生导师团队（重庆市教委）负责人。长期从事可再生能源高效利用原理及技术的研究，具有多年的材料设计和器件构筑经验。在Nature Communications、Science Advances、Joule、Advanced Materials等期刊上累计发表SCI论文130余篇，被引用12000余次（Google Scholar数据），H因子53，入选斯坦福大学发布的全球前2%顶尖科学家、Research.com发布的材料科学顶级科学家、"全球学者库"发布的全球顶尖前10万科学家等榜单。在国际知名出版社CRC Press、Wiley-Scrivener和Wiley VCH出版的学术专著中撰写4个章节。申请中、美、澳专利50余项，已授权20余项。获重庆产学研科技成果创新奖一等奖（排名第1），重庆市自然科学奖二等奖2项（排名第1和第2）。Mail: [email protected]

杜鹃，教授，博士生导师，国科大杭州高等研究院物理与光电工程学院副院长，国家级青年科技人才，中科院“百人计划”，杭州市领军人才。研究方向为：基于钙钛矿的太阳能电池及微纳激光机理及器件研究，运用超快激光光谱、太赫兹时域光谱和显微镜成像技术，研究钙钛矿等材料内部光电转化、发光应用等相关的超快动力学和非线性光学等物理化学前沿问题，结合材料制备、器件测试，实现对光电器件、发光器件功能化的理解和应用，致力于相应的器件发展。先后主持和参与国家重大专项、国家自然科学基金项目、中科院人才计划、国家重点研发计划、中科院战略性先导科技B类专项等项目。先后获得中科院BR计划终期考核优秀、中科院巾帼建功先进个人、中科院创新交叉团队带头人等称号，并应邀担任“发光学报”青年编委。在Nature Communications、 Nano Energy、ACS Energy Letters、ACS Nano、Small等期刊上发表学术论文80余篇，多篇入选ESI热点论文、ESI高被引论文和封面。并受邀在英文专著《Ultrafast Dynamics in Molecules, Nanostructures and Interfaces》和《J-Aggregate》中撰写综述。 

04【《DeCarbon》期刊介绍】

原文链接：https://www.sciencedirect.com/science/article/pii/S2949881323000045