To relieve the growing pressure originated from the energy shortage and environmental issues, solar-energy conversion into chemical or electrical energy has undergone an unprecedented development as a promising strategy in recent years. Indium sulfide (In₂S₃), an efficient visible-light harvester, has been extensively investigated in the field of photoconversion, owing to the fascinating merits including superior photo-absorption coefficient, photoelectric sensitivity, favorable carrier mobility, moderate band gap, excellent stability, and low toxicity. To take full advantage of these properties and further expand beyond the existing short board like low quantum efficiency, various In₂S₃-based functional nanostructures like nanoparticles, nanotubes, atomic two-dimensional sheets, and nanosheets-assembled complexes have been developed. Meanwhile, pleasurable characters of In₂S₃ have been modulated via defective engineering, doping, and hybridization (with inorganic materials or bio-molecules). Gratifyingly, In₂S₃-based photocatalytic, photoelectrocatalytic and photovoltaic systems have made significant impact on the field of energy and environmental issues. Therefore, this review provides an overview of crystal and morphologic structures of pristine In₂S₃ as well as many outstanding properties. Moreover, the pristine In₂S₃ and its derivatives with diverse synthesis routes are systematically summarized. Further, the advancement of In₂S₃-based photocatalytic, photoelectrocatalytic and photovoltaic systems, especially in environmental decontamination, artificial photosynthesis for renewable fuels and solar cells, are highlighted in detail. Ultimately, we conclude with a summary and propose some invigorating perspectives on the challenges from atomic (or macroscopical) structure modulation in material nature, photochemical behavior understanding to solar photovoltaic applications at the forefront of this research platform.

为了缓解源于能源短缺和环境问题的日益增长的压力，近年来，将太阳能转换为化学能或电能已成为空前的发展，这是一种有希望的战略。硫化铟（In ₂ S ₃）是一种有效的可见光收集器，由于其具有光吸收系数，光电灵敏度，良好的载流子迁移率，适中的带隙，优异的光吸收性等引人入胜的优点而在光转换领域进行了广泛的研究。稳定性好，毒性低。为了充分利用这些特性，并进一步扩展到现有的短板（如低量子效率）之外，各种In ₂ S ₃纳米粒子，纳米管，原子二维片和纳米片组装的复合物等基于纳米的功能纳米结构已经得到开发。同时，In ₂ S _3的令人愉悦的特性已通过缺陷工程，掺杂和杂交（与无机材料或生物分子）进行了调节。令人欣慰的是，基于₂ S ₃的光催化，光电催化和光伏系统对能源和环境问题领域产生了重大影响。因此，本综述概述了原始In ₂ S ₃的晶体和形态结构，以及许多出色的性能。此外，原始的In ₂ S ₃系统地总结了其具有多种合成途径的衍生物。此外，详细强调了基于In ₂ S ₃的光催化，光电催化和光伏系统的发展，特别是在环境净化，可再生燃料和太阳能电池的人工光合作用方面。最终，我们以一个总结作为总结，并提出了一些振奋人心的观点，这些挑战涉及材料性质中的原子（或宏观）结构调制，光化学行为的理解以及太阳能光伏应用的挑战。